DDMsgReader.js

/* This is a message reader/lister door for Synchronet.  Features include:
 * - Listing messages in the user's current message area with the ability to
 *   navigate forwards & backwards through the list (and for ANSI users, a
 *   lightbar interface will be used, or optionally can be set to use a more
 *   traditional interface for ANSI users)
 * - The user can select a message from the list to read and optionally reply to
 * - For ANSI users, reading messages is done with an enhanced user interface,
 *   with the ability to scroll up & down through the message, move to the next
 *   or previous message using the right & left arrow keys, display the message
 *   list to choose another message to read, etc.
 * - The ability to start up with the message list or reading messages in the
 *   user's current message area (AKA sub-board)
 * - Message searching
 *
 * Author: Eric Oulashin (AKA Nightfox)
 * BBS: Digital Distortion
 * BBS address: digitaldistortionbbs.com (or digdist.bbsindex.com)
 *
 * Date       Author            Description
 * 2014-09-13 Eric Oulashin     Started (based on my message lister script)
 * 2015-05-06 Eric Oulashin     Version 1.0
 *                              Finally releasing it, as it seems fairly stable
 *                              and has the basic features implemented.
 * 2015-05-17 Eric Oulashin     Version 1.01
 *                              Bug fix: Updated the setting of the enhanced reader
 *                              header width to use the longest line in the header
 *                              (rather than the length of only the first line) to
 *                              ensure that the header displays correctly.
 * 2015-06-10 Eric Oulashin     Version 1.02
 *                              Updated the version to reflect a bug fix in
 *                              DDScanMsgs.js.  No change to the actual reader.
 * 2015-07-11 Eric Oulashin     Version 1.03 Beta
 *                              Started looking into & fixing an issue in Linux
 *                              where after replying to a message, the number of
 *                              messages was not immediately refreshed, so for
 *                              instance, replying to the last message in read
 *                              mode, the reader would not be able to navigate
 *                              to the next message without first going to the
 *                              previous message.
 * 2015-07-12 Eric Oulashin     Version 1.03
 *                              Releasing this version after having done more testing.
 * 2015-07-19 Eric Oulashin     Version 1.04 Beta
 *                              Updated to pause (wait for user keypress) after saving
 *                              a reply message to allow the user to see Synchronet's
 *                              success/fail message on saving a message.
 * 2015-08-09 Eric Oulashin     Adding the ability for the sysop to save a message
 *                              to a file on the BBS machine
 * 2015-09-07 Eric Oulashin     Updated so that in lightbar mode, pressing PageDown
 *                              on the last page will go to the last message, and
 *                              pressing PageUp on the first page will go to the
 *                              first message.  Also, in the enhanced reader mode,
 *                              added a console pause after posting a message in
 *                              the sub-board so that the user can see the info
 *                              screen that Synchronet displays after saving a
 *                              message.
 * 2015-09-19 Eric Oulashin     Started working on adding the ability to download file
 *                              attachments.  Started working on a new function,
 *                              determineMsgAttachments(), which can parse message text
 *                              to save any base64-encoded attachments that might be
 *                              present, and also to check the message subject for a
 *                              filename for a file uploaded to the user's inbox.
 * 2015-10-10 Eric Oulashin     Version 1.04
 *                              Releasing this version after development & testing,
 *                              since attachment downloading and the other new features
 *                              seem to be working fairly well.
 * 2015-10-25 Eric Oulashin     Version 1.05 Beta
 *                              Started updating the reader to display more header &
 *                              kludge lines.
 * 2015-10-28 Eric Oulashin     Started working on updating the ANSIAttrsToSyncAttrs()
 *                              function to use Synchronet's ans2asc tool to convert
 *                              from ANSI to Synchronet codes, to get ANSI messsages
 *                              to look better.
 * 2015-11-07 Eric Oulashin     Expanded the list of @-codes interpreted for message
 *                              headers.  Also, renamed that method to ParseMsgAtCodes().
 *                              Updated the ReadMessageEnhanced method to interpret
 *                              @-codes, but only when reading personal mail, to avoid
 *                              weird behavior on message networks from malicious users
 *                              on other BBSes.
 * 2015-11-24 Eric Oulashin     Started working on using the Frame class (in frame.js)
 *                              to display messages with ANSI codes using a scrollable
 *                              user interface
 * 2015-12-06 Eric Oulashin     Version 1.05
 *                              Officially releasing this version, as it seems to be
 *                              fairly stable after testing.
 * 2015-12-10 Eric Oulashin     Version 1.06 beta
 *                              Bug fix: The scriptFilename command-line argument was
 *                              not being referenced properly in the DigDistMsgReader
 *                              constructor; that has been fixed.
 * 2015-12-11 Eric Oulashin     Updated DigDistMsgReader_MessageAreaScan() so that
 *                              the current sub-board newscan functionality can make
 *                              use of the -subBoard command-line option to scan a
 *                              specific sub-board, which may be different than the
 *                              user's current sub-board.
 *                              Bug fix: Updated DigDistMsgReader_MessageAreaScan()
 *                              to temporarily set bbs.curgrp and bbs.cursub so that
 *                              all @-codes for the sub-boards will be displayed
 *                              correctly by Synchronet.
 * 2015-12-12 Eric Oulashin     Added a new configuration options, pauseAfterNewMsgScan,
 *                              which specifies whether or not to pause after doing
 *                              a new message scan.
 * 2015-12-13 Eric Oulashin     Version 1.06
 *                              Releasing this version after testing showed it's
 *                              working as expected
 * 2015-12-19 Eric Oulashin     Version 1.07 Beta
 *                              Started working on a way of tagging message (i.e., to
 *                              do a batch delete).
 * 2015-12-24 Eric Oulashin     Version 1.07
 *                              Releasing this version, as it seems to be working as
 *                              it should after testing & development.
 * 2016-01-10 Eric Oulashin     Version 1.08
 *                              Bug fix: When scanning message sub-boards, it wasn't
 *                              always closing the sub-board when there were no new
 *                              messages, resulting in further sub-boards failing to
 *                              open after a while.  That has been fixed.
 * 2016-01-15 Eric Oulashin     Version 1.09
 *                              Updated DigDistMsgReader_DisplayEnhancedMsgHdr() to
 *                              not center the enhanced reader header lines horizontally.
 *                              Now, it displays it in column 1.  This was done to fix
 *                              a display issue in some terminal software.
 * 2016-02-05 Eric Oulashin     Version 1.10 beta
 *                              Added the ability to prompt the user to post a message
 *                              on a sub-board and quit after reading the last message
 *                              in a sub-board rather than going to the next sub-board.
 * 2016-02-06 Eric Oulashin     Started working on the ability to display a custom header
 *                              above the message area chooser lists.
 */

/* Command-line arguments (in -arg=val format, or -arg format to enable an
   option):
   -search: A search type.  Available options:
            keyword_search: Do a keyword search in message subject/body text (current message area)
            from_name_search: 'From' name search (current message area)
            to_name_search: 'To' name search (current message area)
            to_user_search: To user search (current message area)
            new_msg_scan: New message scan (prompt for current sub-board, current
                          group, or all)
            new_msg_scan_all: New message scan (all sub-boards)
			new_msg_scan_cur_grp: New message scan (current message group only)
            new_msg_scan_cur_sub: New message scan (current sub-board only).  This
			                      can (optionally) be used with the -subBoard
								  command-line parameter, which specifies an internal
								  code for a sub-board, which may be different from
								  the user's currently selected sub-board.
			to_user_new_scan: Scan for new (unread) messages to the user (prompt
			                  for current sub-board, current group, or all)
			to_user_new_scan_all: Scan for new (unread) messages to the user
			                      (all sub-boards)
			to_user_new_scan_cur_grp: Scan for new (unread) messages to the user
			                          (current group)
            to_user_new_scan_cur_sub: Scan for new (unread) messages to the user
			                          (current sub-board)
			to_user_all_scan: Scan for all messages to the user (prompt for current
			                  sub-board, current group, or all)
            prompt: Prompt the user for one of several search/scan options to
                    choose from
        Note that if the -personalEmail option is specified (to read personal
        email), the only valid search types are keyword_search and
        from_name_search.
   -suppressSearchTypeText: Disable the search type text that would appear
                            above searches or scans (such as "New To You
                            Message Scan", etc.)
   -startMode: Startup mode.  Available options:
               list (or lister): Message list mode
               read (or reader): Message read mode
   -configFilename: Specifies the name of the configuration file to use.
                    Defaults to DDMsgReader.cfg.
   -personalEmail: Read personal email to the user.  This is a true/false value.
                   It doesn't need to explicitly have a =true or =false afterward;
                   simply including -personalEmail will enable it.  If this is specified,
				   the -chooseAreaFirst and -subBoard options will be ignored.
   -personalEmailSent: Read personal email to the user.  This is a true/false
                       value.  It doesn't need to explicitly have a =true or =false
                       afterward; simply including -personalEmailSent will enable it.
   -allPersonalEmail: Read all personal email (to/from all)
   -userNum: Specify a user number (for the personal email options)
   -chooseAreaFirst: Display the message area chooser before reading/listing
                     messages.  This is a true/false value.  It doesn't need
                     to explicitly have a =true or =false afterward; simply
                     including -chooseAreaFirst will enable it.  If -personalEmail
					 or -subBoard is specified, then this option won't have any
                     effect.
	-subBoard: The sub-board (internal code or number) to read, other than the user's
               current sub-board. If this is specified, the -chooseAreaFirst option
			   will be ignored.
	-verboseLogging: Enable logging to the system log & node log.  Currently, there
	                 isn't much that will be logged, but more log messages could be
					 added in the future.
*/

// TODO:
// - Idea for future release: Add some extra functionality to the enhanced
//   reader interface (perhaps accessible on their own small menu or via
//   CTRL hotkeys):
//   - Forward the current message (to username, user #, internet email address,
//     FTN email address, QWK email address, etc.)
//   - Save the message to the BBS computer (sysop only)

load("sbbsdefs.js");
load("text.js"); // Text string definitions (referencing text.dat)

// This script requires Synchronet version 3.15 or higher.
// Exit if the Synchronet version is below the minimum.
if (system.version_num < 31500)
{
	var message = "\1n\1h\1y\1i* Warning:\1n\1h\1w Digital Distortion Message Reader "
	             + "requires version \1g3.15\1w or\r\n"
	             + "higher of Synchronet.  This BBS is using version \1g" + system.version
	             + "\1w.  Please notify the sysop.";
	console.crlf();
	console.print(message);
	console.crlf();
	console.pause();
	exit();
}

// Reader version information
var READER_VERSION = "1.10 Beta 6";
var READER_DATE = "2016-02-14";

// Keyboard key codes for displaying on the screen
var UP_ARROW = ascii(24);
var DOWN_ARROW = ascii(25);
var LEFT_ARROW = ascii(17);
var RIGHT_ARROW = ascii(16);
// PageUp & PageDown keys - Not real key codes, but codes defined
// to be used & recognized in this script
var KEY_PAGE_UP = "\1PgUp";
var KEY_PAGE_DOWN = "\1PgDn";
// Ctrl keys for input
var CTRL_A = "\x01";
var CTRL_B = "\x02";
var CTRL_C = "\x03";
var CTRL_D = "\x04";
var CTRL_E = "\x05";
var CTRL_F = "\x06";
var CTRL_G = "\x07";
var BEEP = CTRL_G;
var CTRL_H = "\x08";
var BACKSPACE = CTRL_H;
var CTRL_I = "\x09";
var TAB = CTRL_I;
var CTRL_J = "\x0a";
var CTRL_K = "\x0b";
var CTRL_L = "\x0c";
var CTRL_M = "\x0d";
var CTRL_N = "\x0e";
var CTRL_O = "\x0f";
var CTRL_P = "\x10";
var CTRL_Q = "\x11";
var XOFF = CTRL_Q;
var CTRL_R = "\x12";
var CTRL_S = "\x13";
var XON = CTRL_S;
var CTRL_T = "\x14";
var CTRL_U = "\x15";
var CTRL_V = "\x16";
var KEY_INSERT = CTRL_V;
var CTRL_W = "\x17";
var CTRL_X = "\x18";
var CTRL_Y = "\x19";
var CTRL_Z = "\x1a";
//var KEY_ESC = "\x1b";
var KEY_ESC = ascii(27);
var KEY_ENTER = CTRL_M;
// These are defined in sbbsdefs.js:
//var	  KEY_UP		='\x1e';	// ctrl-^ (up arrow)
//var	  KEY_DOWN		='\x0a';	// ctrl-j (dn arrow)
//var   KEY_RIGHT		='\x06';	// ctrl-f (rt arrow)
//var	  KEY_LEFT		='\x1d';	// ctrl-] (lf arrow)
//var	  KEY_HOME		='\x02';	// ctrl-b (home)
//var   KEY_END       ='\x05';	// ctrl-e (end)
//var   KEY_DEL       ='\x7f';    // (del)


// Characters for display
// Box-drawing/border characters: Single-line
var UPPER_LEFT_SINGLE = "Ú";
var HORIZONTAL_SINGLE = "Ä";
var UPPER_RIGHT_SINGLE = "¿";
var VERTICAL_SINGLE = "³";
var LOWER_LEFT_SINGLE = "À";
var LOWER_RIGHT_SINGLE = "Ù";
var T_SINGLE = "Â";
var LEFT_T_SINGLE = "Ã";
var RIGHT_T_SINGLE = "´";
var BOTTOM_T_SINGLE = "Á";
var CROSS_SINGLE = "Å";
// Box-drawing/border characters: Double-line
var UPPER_LEFT_DOUBLE = "É";
var HORIZONTAL_DOUBLE = "Í";
var UPPER_RIGHT_DOUBLE = "»";
var VERTICAL_DOUBLE = "º";
var LOWER_LEFT_DOUBLE = "È";
var LOWER_RIGHT_DOUBLE = "¼";
var T_DOUBLE = "Ë";
var LEFT_T_DOUBLE = "Ì";
var RIGHT_T_DOUBLE = "¹";
var BOTTOM_T_DOUBLE = "Ê";
var CROSS_DOUBLE = "Î";
// Box-drawing/border characters: Vertical single-line with horizontal double-line
var UPPER_LEFT_VSINGLE_HDOUBLE = "Õ";
var UPPER_RIGHT_VSINGLE_HDOUBLE = "¸";
var LOWER_LEFT_VSINGLE_HDOUBLE = "Ô";
var LOWER_RIGHT_VSINGLE_HDOUBLE = "¾";
// Other special characters
var DOT_CHAR = "ú";
var CHECK_CHAR = "û";
var THIN_RECTANGLE_LEFT = "Ý";
var THIN_RECTANGLE_RIGHT = "Þ";
var BLOCK1 = "°"; // Dimmest block
var BLOCK2 = "±";
var BLOCK3 = "²";
var BLOCK4 = "Û"; // Brightest block


const ERROR_PAUSE_WAIT_MS = 1500;

// gIsSysop stores whether or not the user is a sysop.
var gIsSysop = user.compare_ars("SYSOP"); // Whether or not the user is a sysop
// Store whether or not the Synchronet compile date is at least May 12, 2013
// so that we don't have to call compileDateAtLeast2013_05_12() multiple times.
var gSyncCompileDateAtLeast2013_05_12 = compileDateAtLeast2013_05_12();
// Reader mode definitions:
const READER_MODE_LIST = 0;
const READER_MODE_READ = 1;
// Search types
const SEARCH_NONE = -1;
const SEARCH_KEYWORD = 2;
const SEARCH_FROM_NAME = 3;
const SEARCH_TO_NAME_CUR_MSG_AREA = 4;
const SEARCH_TO_USER_CUR_MSG_AREA = 5;
const SEARCH_MSG_NEWSCAN = 6;
const SEARCH_MSG_NEWSCAN_CUR_SUB = 7;
const SEARCH_MSG_NEWSCAN_CUR_GRP = 8;
const SEARCH_MSG_NEWSCAN_ALL = 9;
const SEARCH_TO_USER_NEW_SCAN = 10;
const SEARCH_TO_USER_NEW_SCAN_CUR_SUB = 11;
const SEARCH_TO_USER_NEW_SCAN_CUR_GRP = 12;
const SEARCH_TO_USER_NEW_SCAN_ALL = 13;
const SEARCH_ALL_TO_USER_SCAN = 14;

// Message threading types
const THREAD_BY_ID = 15;
const THREAD_BY_TITLE = 16;
const THREAD_BY_AUTHOR = 17;
const THREAD_BY_TO_USER = 18;

// Reader mode - Actions
const ACTION_NONE = 19;
const ACTION_GO_NEXT_MSG = 20;
const ACTION_GO_PREVIOUS_MSG = 21;
const ACTION_GO_SPECIFIC_MSG = 22;
const ACTION_GO_FIRST_MSG = 23;
const ACTION_GO_LAST_MSG = 24;
const ACTION_DISPLAY_MSG_LIST = 25;
const ACTION_CHG_MSG_AREA = 26;
const ACTION_GO_PREV_MSG_AREA = 27;
const ACTION_GO_NEXT_MSG_AREA = 28;
const ACTION_QUIT = 29;

// Strings for the various message attributes (used by makeAllAttrStr(),
// makeMainMsgAttrStr(), makeAuxMsgAttrStr(), and makeNetMsgAttrStr())
var gMainMsgAttrStrs = new Object();
gMainMsgAttrStrs[MSG_DELETE] = "Del";
gMainMsgAttrStrs[MSG_PRIVATE] = "Priv";
gMainMsgAttrStrs[MSG_READ] = "Read";
gMainMsgAttrStrs[MSG_PERMANENT] = "Perm";
gMainMsgAttrStrs[MSG_LOCKED] = "Lock";
gMainMsgAttrStrs[MSG_ANONYMOUS] = "Anon";
gMainMsgAttrStrs[MSG_KILLREAD] = "Killread";
gMainMsgAttrStrs[MSG_MODERATED] = "Mod";
gMainMsgAttrStrs[MSG_VALIDATED] = "Valid";
gMainMsgAttrStrs[MSG_REPLIED] = "Repl";
gMainMsgAttrStrs[MSG_NOREPLY] = "NoRepl";
var gAuxMsgAttrStrs = new Object();
gAuxMsgAttrStrs[MSG_FILEREQUEST] = "Freq";
gAuxMsgAttrStrs[MSG_FILEATTACH] = "Attach";
gAuxMsgAttrStrs[MSG_TRUNCFILE] = "TruncFile";
gAuxMsgAttrStrs[MSG_KILLFILE] = "KillFile";
gAuxMsgAttrStrs[MSG_RECEIPTREQ] = "RctReq";
gAuxMsgAttrStrs[MSG_CONFIRMREQ] = "ConfReq";
gAuxMsgAttrStrs[MSG_NODISP] = "NoDisp";
var gNetMsgAttrStrs = new Object();
gNetMsgAttrStrs[MSG_LOCAL] = "FromLocal";
gNetMsgAttrStrs[MSG_INTRANSIT] = "Transit";
gNetMsgAttrStrs[MSG_SENT] = "Sent";
gNetMsgAttrStrs[MSG_KILLSENT] = "KillSent";
gNetMsgAttrStrs[MSG_ARCHIVESENT] = "ArcSent";
gNetMsgAttrStrs[MSG_HOLD] = "Hold";
gNetMsgAttrStrs[MSG_CRASH] = "Crash";
gNetMsgAttrStrs[MSG_IMMEDIATE] = "Now";
gNetMsgAttrStrs[MSG_DIRECT] = "Direct";
gNetMsgAttrStrs[MSG_GATE] = "Gate";
gNetMsgAttrStrs[MSG_ORPHAN] = "Orphan";
gNetMsgAttrStrs[MSG_FPU] = "FPU";
gNetMsgAttrStrs[MSG_TYPELOCAL] = "ForLocal";
gNetMsgAttrStrs[MSG_TYPEECHO] = "ForEcho";
gNetMsgAttrStrs[MSG_TYPENET] = "ForNetmail";


// Determine the script's startup directory.
// This code is a trick that was created by Deuce, suggested by Rob Swindell
// as a way to detect which directory the script was executed in.  I've
// shortened the code a little.
var gStartupPath = '.';
try { throw dig.dist(dist); } catch(e) { gStartupPath = e.fileName; }
gStartupPath = backslash(gStartupPath.replace(/[\/\\][^\/\\]*$/,''));

// See if we're running in Windows or not.  Until early 2015, the word_wrap()
// function seemed to have a bug where the wrapping length in Linux was one
// less than what it uses in Windows).  That seemed to be fixed in one of the
// Synchronet 3.16 builds in early 2015.
var gRunningInWindows = /^WIN/.test(system.platform.toUpperCase());

// Temporary directory (in the logged-in user's node directory) to store
// file attachments, etc.
var gFileAttachDir = backslash(system.node_dir + "DDMsgReader_Attachments");
// If the temporary attachments directory exists, then delete it (in case the last
// user hung up while running this script, etc.)
if (file_exists(gFileAttachDir))
	deltree(gFileAttachDir);

// See if frame.js and scrollbar.js exist in sbbs/exec/load on the BBS machine.
// If so, load them.  They will be used for displaying messages with ANSI content
// with a scrollable user interface.
var gFrameJSAvailable = file_exists(backslash(system.exec_dir) + "load/frame.js");
if (gFrameJSAvailable)
	load("frame.js");
var gScrollbarJSAvailable = file_exists(backslash(system.exec_dir) + "load/scrollbar.js");
if (gScrollbarJSAvailable)
	load("scrollbar.js");

/////////////////////////////////////////////
// Script execution code

// Parse the command-line arguments

var gCmdLineArgVals = parseArgs(argv);
var gAllPersonalEmailOptSpecified = (gCmdLineArgVals.hasOwnProperty("allpersonalemail") && gCmdLineArgVals.allpersonalemail);
// Check to see if the command-line argument for reading personal email is enabled
var gListPersonalEmailCmdLineOpt = ((gCmdLineArgVals.hasOwnProperty("personalemail") && gCmdLineArgVals.personalemail) ||
                                    (gCmdLineArgVals.hasOwnProperty("personalemailsent") && gCmdLineArgVals.personalemailsent) ||
									gAllPersonalEmailOptSpecified);
// If the command-line parameter "search" is specified as "prompt", then
// prompt the user for the type of search to perform.
var gDoDDMR = true; // If the user doesn't choose a search type, this will be set to false
if (gCmdLineArgVals.hasOwnProperty("search") && (gCmdLineArgVals["search"].toLowerCase() == "prompt"))
{
	console.print("\1n");
	console.crlf();
	console.print("\1cMessage search:");
	console.crlf();
	var allowedKeys = "";
	if (!gListPersonalEmailCmdLineOpt)
	{
		allowedKeys = "ANKFTYUS";
		console.print(" \1g\1hN\1y = \1n\1cNew message scan");
		console.crlf();
		console.print(" \1g\1hK\1y = \1n\1cKeyword");
		console.crlf();
		console.print(" \1h\1gF\1y = \1n\1cFrom name");
		console.crlf();
		console.print(" \1h\1gT\1y = \1n\1cTo name");
		console.crlf();
		console.print(" \1h\1gY\1y = \1n\1cTo you");
		console.crlf();
		console.print(" \1h\1gU\1y = \1n\1cUnread (new) messages to you");
		console.crlf();
		console.print(" \1h\1gS\1y = \1n\1cScan for msgs to you");
		console.crlf();
	}
	else
	{
		// Reading personal email - Allow fewer choices
		allowedKeys = "KF";
		console.print(" \1g\1hK\1y = \1n\1cKeyword");
		console.crlf();
		console.print(" \1h\1gF\1y = \1n\1cFrom name");
		console.crlf();
	}
	console.print(" \1h\1gA\1y = \1n\1cAbort");
	console.crlf();
	console.print("\1n\1cMake a selection\1g\1h: \1c");
	// TODO: Check to see if keyword & from name search work when reading
	// personal email
	switch (console.getkeys(allowedKeys))
	{
		case "N":
			gCmdLineArgVals["search"] = "new_msg_scan";
			break;
		case "K":
			gCmdLineArgVals["search"] = "keyword_search";
			break;
		case "F":
			gCmdLineArgVals["search"] = "from_name_search";
			break;
		case "T":
			gCmdLineArgVals["search"] = "to_name_search";
			break;
		case "Y":
			gCmdLineArgVals["search"] = "to_user_search";
			break;
		case "U":
			gCmdLineArgVals["search"] = "to_user_new_scan";
			break;
		case "S":
			gCmdLineArgVals["search"] = "to_user_all_scan";
			break;
		case "A": // Abort
		default:
			gDoDDMR = false;
			console.print("\1n\1h\1y\1iAborted\1n");
			console.crlf();
			console.pause();
			break;
	}
}

if (gDoDDMR)
{
	// Create an instance of the DigDistMsgReader class and use it to read/list the
	// messages in the user's current sub-board.  Pass the parsed command-line
	// argument values object to its constructor.
	var readerSubCode = (gListPersonalEmailCmdLineOpt ? "mail" : bbs.cursub_code);
	// If the -subBoard option was specified and the "read personal email" option was
	// not specified, then use the sub-board specified by the -subBoard command-line
	// option.
	if (gCmdLineArgVals.hasOwnProperty("subboard") && !gListPersonalEmailCmdLineOpt)
	{
		// If the specified sub-board option is all digits, then treat it as the
		// sub-board number.  Otherwise, treat it as an internal sub-board code.
		if (/^[0-9]+$/.test(gCmdLineArgVals["subboard"]))
			readerSubCode = getSubBoardCodeFromNum(Number(gCmdLineArgVals["subboard"]));
		else
			readerSubCode = gCmdLineArgVals["subboard"];
	}
	var msgReader = new DigDistMsgReader(readerSubCode, gCmdLineArgVals);
	// If the option to choose a message area first was enabled on the command-line
	// (and neither the -subBoard nor the -personalEmail options were specified),
	// then let the user choose a sub-board now.
	if (gCmdLineArgVals.hasOwnProperty("chooseareafirst") && gCmdLineArgVals["chooseareafirst"] && !gCmdLineArgVals.hasOwnProperty("subboard") && !gListPersonalEmailCmdLineOpt)
		msgReader.SelectMsgArea();
	// Back up the user's current sub-board so that we can change back
	// to it after searching is done, if a search is done.
	var originalMsgGrpIdx = bbs.curgrp;
	var originalSubBoardIdx = bbs.cursub;
	var restoreOriginalSubCode = true;
	// Based on the reader's start mode/search type, do the appropriate thing.
	switch (msgReader.searchType)
	{
		case SEARCH_NONE:
			restoreOriginalSubCode = false;
			msgReader.ReadOrListSubBoard();
			break;
		case SEARCH_KEYWORD:
			msgReader.SearchMessages("keyword_search");
			break;
		case SEARCH_FROM_NAME:
			msgReader.SearchMessages("from_name_search");
			break;
		case SEARCH_TO_NAME_CUR_MSG_AREA:
			msgReader.SearchMessages("to_name_search");
			break;
		case SEARCH_TO_USER_CUR_MSG_AREA:
			msgReader.SearchMessages("to_user_search");
			break;
		case SEARCH_MSG_NEWSCAN:
			if (!gCmdLineArgVals.suppresssearchtypetext)
			{
				console.crlf();
				console.print(msgReader.text.newMsgScanText);
				console.crlf();
			}
			msgReader.MessageAreaScan(SCAN_CFG_NEW, SCAN_NEW);
			break;
		case SEARCH_MSG_NEWSCAN_CUR_SUB:
			msgReader.MessageAreaScan(SCAN_CFG_NEW, SCAN_NEW, "S");
			break;
		case SEARCH_MSG_NEWSCAN_CUR_GRP:
			msgReader.MessageAreaScan(SCAN_CFG_NEW, SCAN_NEW, "G");
			break;
		case SEARCH_MSG_NEWSCAN_ALL:
			msgReader.MessageAreaScan(SCAN_CFG_NEW, SCAN_NEW, "A");
			break;
		case SEARCH_TO_USER_NEW_SCAN:
			if (!gCmdLineArgVals.suppresssearchtypetext)
			{
				console.crlf();
				console.print(msgReader.text.newToYouMsgScanText);
				console.crlf();
			}
			msgReader.MessageAreaScan(SCAN_CFG_TOYOU/*SCAN_CFG_YONLY*/, SCAN_UNREAD);
			break;
		case SEARCH_TO_USER_NEW_SCAN_CUR_SUB:
			msgReader.MessageAreaScan(SCAN_CFG_TOYOU/*SCAN_CFG_YONLY*/, SCAN_UNREAD, "S");
			break;
		case SEARCH_TO_USER_NEW_SCAN_CUR_GRP:
			msgReader.MessageAreaScan(SCAN_CFG_TOYOU/*SCAN_CFG_YONLY*/, SCAN_UNREAD, "G");
			break;
		case SEARCH_TO_USER_NEW_SCAN_ALL:
			msgReader.MessageAreaScan(SCAN_CFG_TOYOU/*SCAN_CFG_YONLY*/, SCAN_UNREAD, "A");
			break;
		case SEARCH_ALL_TO_USER_SCAN:
			if (!gCmdLineArgVals.suppresssearchtypetext)
			{
				console.crlf();
				console.print(msgReader.text.allToYouMsgScanText);
				console.crlf();
			}
			msgReader.MessageAreaScan(SCAN_CFG_TOYOU, SCAN_TOYOU);
			break;
	}

	// If we should restore the user's original message area, then do so.
	if (restoreOriginalSubCode)
	{
		bbs.cursub = 0;
		bbs.curgrp = originalMsgGrpIdx;
		bbs.cursub = originalSubBoardIdx;
	}

	// Remove the temporary attachments directory if it exists
	deltree(gFileAttachDir);

	// Before this script finishes, make sure the terminal attributes are set back
	// to normal (in case there are any attributes left on, such as background,
	// blink, etc.)
	console.print("\1n");
	if (console.term_supports(USER_ANSI))
		console.print("[0m");
}

// End of script execution.  Functions below:

///////////////////////////////////////////////////////////////////////////////////
// DigDistMsgReader class stuff

// DigDistMsgReader class constructor: Constructs a
// DigDistMsgReader object, to be used for listing messages
// in a message area.
//
// Parameters:
//  pSubBoardCode: Optional - The Synchronet sub-board code, or "mail"
//                 for personal email.
//  pScriptArgs: Optional - An object containing key/value pairs representing
//               the command-line arguments & values, as returned by parseArgs().
function DigDistMsgReader(pSubBoardCode, pScriptArgs)
{
	// startMode specifies the mode for the reader to start in - List mode
	// or reader mode, etc.  This is a setting that is read from the configuration
	// file.  The configuration file can be either READER_MODE_READ or
	// READER_MODE_LIST, but the optional "mode" parameter in the command-line
	// arguments can specify another mode.
	this.startMode = READER_MODE_LIST;

	// msgSearchHdrs is an object containing message headers found via searching.
	// It is indexed by internal message area code.  Each internal code index
	// will specify an object containing the following properties:
	//  indexed: A standard 0-based array containing message headers
	this.msgSearchHdrs = new Object();
	this.searchString = ""; // To be used for message searching
	// this.searchType will specify the type of search:
	//  SEARCH_NONE (-1): No search
	//  SEARCH_KEYWORD: Keyword search in message subject & body
	//  SEARCH_FROM_NAME: Search by 'from' name
	//  SEARCH_TO_NAME_CUR_MSG_AREA: Search by 'to' name
	//  SEARCH_TO_USER_CUR_MSG_AREA: Search by 'to' name, to the current user
	//  SEARCH_MSG_NEWSCAN: New (unread) message scan (prompt the user for sub, group, or all)
	//  SEARCH_MSG_NEWSCAN_CUR_SUB: New (unread) message scan (current sub-board)
	//  SEARCH_MSG_NEWSCAN_CUR_GRP: New (unread) message scan (current message group)
	//  SEARCH_MSG_NEWSCAN_ALL: New (unread) message scan (all message sub-boards)
	//  SEARCH_TO_USER_NEW_SCAN: New (unread) messages to the current user (prompt the user for sub, group, or all)
	//  SEARCH_TO_USER_NEW_SCAN_CUR_SUB: New (unread) messages to the current user (current sub-board)
	//  SEARCH_TO_USER_NEW_SCAN_CUR_GRP: New (unread) messages to the current user (current group)
	//  SEARCH_TO_USER_NEW_SCAN_ALL: New (unread) messages to the current user (all sub-board)
	//  SEARCH_ALL_TO_USER_SCAN: All messages to the current user
	this.searchType = SEARCH_NONE;
	this.doingMsgScan = false; // Set to true in MessageAreaScan()

	this.subBoardCode = bbs.cursub_code; // The message sub-board code
	this.readingPersonalEmail = false;
	// A method to set subBoardCode and readingPersonalEmail
	this.setSubBoardCode = DigDistMsgReader_SetSubBoardCode;

	// this.colors will be an array of colors to use in the message list
	this.colors = getDefaultColors();
	this.msgbase = null;    // Will be a MsgBase object.
	this.readingPersonalEmailFromUser = false;
	if (typeof(pSubBoardCode) == "string")
	{
		var subCodeLowerCase = pSubBoardCode.toLowerCase();
		if (subBoardCodeIsValid(subCodeLowerCase))
		{
			this.setSubBoardCode(subCodeLowerCase);
			this.msgbase = new MsgBase(this.subBoardCode);
			if (gCmdLineArgVals.hasOwnProperty("personalemailsent") && gCmdLineArgVals.personalemailsent)
				this.readingPersonalEmailFromUser = true;
		}
	}

	// This property controls whether or not the user will be prompted to
	// continue listing messages after selecting a message to read.  Only for
	// regular reading, not for newscans etc.
	this.promptToContinueListingMessages = false;
	// Whether or not to prompt the user to confirm to read a message
	this.promptToReadMessage = false;
	// For enhanced reader mode (reading only, not for newscan, etc.): Whether or
	// not to ask the user whether to post on the sub-board in reader mode after
	// reading the last message instead of prompting to go to the next sub-board.
	// This is like the stock Synchronet behavior.
	this.readingPostOnSubBoardInsteadOfGoToNext = false;

	// String lengths for the columns to write
	// Fixed field widths: Message number, date, and time
	// TODO: It might be good to figure out the longest message number for a
	// sub-board and set the message number length dynamically.  It would have
	// to change whenever the user changes to a different sub-board, and the
	// message list format string would have to change too.
	this.MSGNUM_LEN = 4;
	this.DATE_LEN = 10; // i.e., YYYY-MM-DD
	this.TIME_LEN = 8;  // i.e., HH:MM:SS
	// Variable field widths: From, to, and subject (based on a screen width of
	// 80 columns)
	this.FROM_LEN = (console.screen_columns * (15/80)).toFixed(0);
	this.TO_LEN = (console.screen_columns * (15/80)).toFixed(0);
	this.SUBJ_LEN = (console.screen_columns * (22/80)).toFixed(0);

	// Whether or not the user chose to read a message
	this.readAMessage = false;
	// Whether or not the user denied confirmation to read a message
	this.deniedReadingMessage = false;

	// msgListUseLightbarListInterface specifies whether or not to use the lightbar
	// interface for the message list.  The lightbar interface will only be used if
	// the user's terminal supports ANSI.
	this.msgListUseLightbarListInterface = true;

	// Whether or not to use the scrolling interface when reading a message
	// (will only be used for ANSI terminals).
	this.scrollingReaderInterface = true;

	// reverseListOrder stores whether or not to arrange the message list descending
	// by date.
	this.reverseListOrder = false;

	// displayBoardInfoInHeader specifies whether or not to display
	// the message group and sub-board lines in the header at the
	// top of the screen (an additional 2 lines).
	this.displayBoardInfoInHeader = false;

	// msgList_displayMessageDateImported specifies whether or not to use the
	// message import date as the date displayed in the message list.  If false,
	// the message written date will be displayed.
	this.msgList_displayMessageDateImported = true;

	// The number of spaces to use for tab characters - Used in the
	// extended read mode
	this.numTabSpaces = 3;

	// Construct the header format string
	this.sHdrFormatStr = "%" + this.MSGNUM_LEN + "s %-" + this.FROM_LEN + "s %-"
	                   + this.TO_LEN + "s %-" + this.SUBJ_LEN + "s %-"
	                   + this.DATE_LEN + "s %-" + this.TIME_LEN + "s";
	// If the user's terminal doesn't support ANSI, then append a newline to
	// the end of the format string (we won't be able to move the cursor).
	if (!canDoHighASCIIAndANSI())
		this.sHdrFormatStr += "\r\n";

	// this.text is an object containing text used for various functionality.
	this.text = new Object();
	this.text.scrollbarBGChar = BLOCK1;
	this.text.scrollbarScrollBlockChar = BLOCK2;
	this.text.goToPrevMsgAreaPromptText = "\1n\1c\1hGo to the previous message area";
	this.text.goToNextMsgAreaPromptText = "\1n\1c\1hGo to the next message area";
	this.text.newMsgScanText = "\1c\1hN\1n\1cew \1hM\1n\1cessage \1hS\1n\1ccan";
	this.text.newToYouMsgScanText = "\1c\1hN\1n\1cew \1hT\1n\1co \1hY\1n\1cou \1hM\1n\1cessage \1hS\1n\1ccan";
	this.text.allToYouMsgScanText = "\1c\1hA\1n\1cll \1hM\1n\1cessages \1hT\1n\1co \1hY\1n\1cou \1hS\1n\1ccan";
	this.text.scanScopePromptText = "\1n\1h\1wS\1n\1gub-board, \1h\1wG\1n\1group, or \1h\1wA\1n\1gll \1h(\1wENTER\1n\1g to cancel\1h)\1n\1g: \1h\1c";
	this.text.goToMsgNumPromptText = "\1n\1cGo to message # (or \1hENTER\1n\1c to cancel)\1g\1h: \1c";
	this.text.msgScanAbortedText = "\1n\1h\1cM\1n\1cessage scan \1h\1y\1iaborted\1n";
	this.text.deleteMsgNumPromptText = "\1n\1cNumber of the message to be deleted (or \1hENTER\1n\1c to cancel)\1g\1h: \1c";
	this.text.editMsgNumPromptText = "\1n\1cNumber of the message to be edited (or \1hENTER\1n\1c to cancel)\1g\1h: \1c";
	this.text.searchingSubBoardAbovePromptText = "\1n\1cSearching (current sub-board: \1b\1h%s\1n\1c)";
	this.text.searchingSubBoardText = "\1n\1cSearching \1h%s\1n\1c...";
	this.text.noMessagesInSubBoardText = "\1n\1h\1bThere are no messages in the area \1w%s\1b.";
	this.text.noSearchResultsInSubBoardText = "\1n\1h\1bNo messages were found in the area \1w%s\1b with the given search criteria.";
	this.text.msgScanCompleteText = "\1n\1h\1cM\1n\1cessage scan complete\1h\1g.\1n";
	this.text.invalidMsgNumText = "\1n\1y\1hInvalid message number: %d";
	this.text.readMsgNumPromptText = "\1n\1g\1h\1i* \1n\1cRead message #: \1h";
	this.text.msgHasBeenDeletedText = "\1n\1h\1g* \1yMessage #\1w%d \1yhas been deleted.";
	this.text.noKludgeLinesForThisMsgText = "\1n\1h\1yThere are no kludge lines for this message.";
	this.text.searchingPersonalMailText = "\1w\1hSearching personal mail\1n";
	this.text.searchTextPromptText = "\1cEnter the search text\1g\1h:\1n\1c ";
	this.text.fromNamePromptText = "\1cEnter the 'from' name to search for\1g\1h:\1n\1c ";
	this.text.toNamePromptText = "\1cEnter the 'to' name to search for\1g\1h:\1n\1c ";
	this.text.abortedText = "\1n\1y\1h\1iAborted\1n";
	this.text.loadingPersonalMailText = "\1n\1cLoading %s...";
	this.text.msgDelConfirmText = "\1n\1h\1yDelete\1n\1c message #\1h%d\1n\1c: Are you sure";
	this.text.delSelectedMsgsConfirmText = "\1n\1h\1yDelete selected messages: Are you sure";
	this.text.msgDeletedText = "\1n\1cMessage #\1h%d\1n\1c has been marked for deletion.";
	this.text.selectedMsgsDeletedText = "\1n\1cSelected messages have been marked for deletion.";
	this.text.cannotDeleteMsgText_notYoursNotASysop = "\1n\1h\1wCannot delete message #\1y%d \1wbecause it's not yours or you're not a sysop.";
	this.text.cannotDeleteMsgText_notLastPostedMsg = "\1n\1h\1g* \1yCannot delete message #%d. You can only delete your last message in this area.\1n";
	this.text.cannotDeleteAllSelectedMsgsText = "\1n\1y\1h* Cannot delete all selected messages";
	this.text.msgEditConfirmText = "\1n\1cEdit message #\1h%d\1n\1c: Are you sure";
	this.text.noPersonalEmailText = "\1n\1cYou have no messages.";
	this.text.postOnSubBoard = "\1n\1gPost on %s %s";

	// Set the methods for the object
	this.RefreshSearchResultMsgHdr = DigDistMsgReader_RefreshSearchResultMsgHdr;   // Refreshes a message header in the search results
	this.SearchMessages = DigDistMsgReader_SearchMessages; // Prompts the user for search text, then lists/reads messages, performing the search
	this.ReadMessages = DigDistMsgReader_ReadMessages;
	this.DisplayEnhancedMsgReadHelpLine = DigDistMsgReader_DisplayEnhancedMsgReadHelpLine;
	this.GoToPrevSubBoardForEnhReader = DigDistMsgReader_GoToPrevSubBoardForEnhReader;
	this.GoToNextSubBoardForEnhReader = DigDistMsgReader_GoToNextSubBoardForEnhReader;
	this.SetUpTraditionalMsgListVars = DigDistMsgReader_SetUpTraditionalMsgListVars;
	this.SetUpLightbarMsgListVars = DigDistMsgReader_SetUpLightbarMsgListVars;
	this.ListMessages = DigDistMsgReader_ListMessages;
	this.ListMessages_Traditional = DigDistMsgReader_ListMessages_Traditional;
	this.ListMessages_Lightbar = DigDistMsgReader_ListMessages_Lightbar;
	this.ClearSearchData = DigDistMsgReader_ClearSearchData;
	this.ReadOrListSubBoard = DigDistMsgReader_ReadOrListSubBoard;
	this.PopulateHdrsIfSearch_DispErrorIfNoMsgs = DigDistMsgReader_PopulateHdrsIfSearch_DispErrorIfNoMsgs;
	this.SearchTypePopulatesSearchResults = DigDistMsgReader_SearchTypePopulatesSearchResults;
	this.SearchTypeRequiresSearchText = DigDistMsgReader_SearchTypeRequiresSearchText;
	this.MessageAreaScan = DigDistMsgReader_MessageAreaScan;
	this.PromptContinueOrReadMsg = DigDistMsgReader_PromptContinueOrReadMsg;
	this.WriteMsgListScreenTopHeader = DigDistMsgReader_WriteMsgListScreenTopHeader;
	this.ReadMessage = DigDistMsgReader_ReadMessage;
	this.ReadMessageEnhanced = DigDistMsgReader_ReadMessageEnhanced;
	this.EnhReaderPrepLast2LinesForPrompt = DigDistMsgReader_EnhReaderPrepLast2LinesForPrompt;
	this.LookForNextOrPriorNonDeletedMsg = DigDistMsgReader_LookForNextOrPriorNonDeletedMsg;
	this.PrintMessageInfo = DigDistMsgReader_PrintMessageInfo;
	this.ListScreenfulOfMessages = DigDistMsgReader_ListScreenfulOfMessages;
	this.DisplayMsgListHelp = DigDistMsgReader_DisplayMsgListHelp;
	this.DisplayTraditionalMsgListHelp = DigDistMsgReader_DisplayTraditionalMsgListHelp;
	this.DisplayLightbarMsgListHelp = DigDistMsgReader_DisplayLightbarMsgListHelp;
	this.DisplayMessageListNotesHelp = DigDistMsgReader_DisplayMessageListNotesHelp;
	this.SetMsgListPauseTextAndLightbarHelpLine = DigDistMsgReader_SetMsgListPauseTextAndLightbarHelpLine;
	this.SetEnhancedReaderHelpLine = DigDistMsgReader_SetEnhancedReaderHelpLine;
	this.EditExistingMsg = DigDistMsgReader_EditExistingMsg;
	this.CanDelete = DigDistMsgReader_CanDelete;
	this.CanDeleteLastMsg = DigDistMsgReader_CanDeleteLastMsg;
	this.CanEdit = DigDistMsgReader_CanEdit;
	this.CanQuote = DigDistMsgReader_CanQuote;
	this.ReadConfigFile = DigDistMsgReader_ReadConfigFile;
	this.DisplaySyncMsgHeader = DigDistMsgReader_DisplaySyncMsgHeader;
	this.GetMsgHdrFilenameFull = DigDistMsgReader_GetMsgHdrFilenameFull;
	this.GetMsgHdrByIdx = DigDistMsgReader_GetMsgHdrByIdx;
	this.GetMsgHdrByMsgNum = DigDistMsgReader_GetMsgHdrByMsgNum;
	this.GetMsgHdrByAbsoluteNum = DigDistMsgReader_GetMsgHdrByAbsoluteNum;
	this.AbsMsgNumToIdx = DigDistMsgReader_AbsMsgNumToIdx;
	this.IdxToAbsMsgNum = DigDistMsgReader_IdxToAbsMsgNum;
	this.NumMessages = DigDistMsgReader_NumMessages;
	this.NonDeletedMessagesExist = DigDistMsgReader_NonDeletedMessagesExist;
	this.HighestMessageNum = DigDistMsgReader_HighestMessageNum;
	this.IsValidMessageNum = DigDistMsgReader_IsValidMessageNum;
	this.PromptForMsgNum = DigDistMsgReader_PromptForMsgNum;
	this.ParseMsgAtCodes = DigDistMsgReader_ParseMsgAtCodes;
	this.ReplaceMsgAtCodeFormatStr = DigDistMsgReader_ReplaceMsgAtCodeFormatStr;
	this.FindNextNonDeletedMsgIdx = DigDistMsgReader_FindNextNonDeletedMsgIdx;
	this.ChangeSubBoard = DigDistMsgReader_ChangeSubBoard;
	this.EnhancedReaderChangeSubBoard = DigDistMsgReader_EnhancedReaderChangeSubBoard;
	this.ReplyToMsg = DigDistMsgReader_ReplyToMsg;
	this.DoPrivateReply = DigDistMsgReader_DoPrivateReply;
	this.DisplayEnhancedReaderHelp = DigDistMsgReader_DisplayEnhancedReaderHelp;
	this.DisplayEnhancedMsgHdr = DigDistMsgReader_DisplayEnhancedMsgHdr;
	this.DisplayAreaChgHdr = DigDistMsgReader_DisplayAreaChgHdr;
	this.DisplayEnhancedReaderWholeScrollbar = DigDistMsgReader_DisplayEnhancedReaderWholeScrollbar;
	this.UpdateEnhancedReaderScollbar = DigDistMsgReader_UpdateEnhancedReaderScollbar;
	this.MessageIsDeleted = DigDistMsgReader_MessageIsDeleted;
	this.MessageIsLastFromUser = DigDistMsgReader_MessageIsLastFromUser;
	this.DisplayEnhReaderError = DigDistMsgReader_DisplayEnhReaderError;
	this.EnhReaderPromptYesNo = DigDistMsgReader_EnhReaderPromptYesNo;
	this.PromptAndDeleteMessage = DigDistMsgReader_PromptAndDeleteMessage;
	this.PromptAndDeleteSelectedMessages = DigDistMsgReader_PromptAndDeleteSelectedMessages;
	this.GetExtdMsgHdrInfo = DigDistMsgReader_GetExtdMsgHdrInfo;
	this.GetMsgInfoForEnhancedReader = DigDistMsgReader_GetMsgInfoForEnhancedReader;
	this.GetLastReadMsgIdx = DigDistMsgReader_GetLastReadMsgIdx;
	this.GetScanPtrMsgIdx = DigDistMsgReader_GetScanPtrMsgIdx;
	this.SearchingAndResultObjsDefinedForCurSub = DigDistMsgReader_SearchingAndResultObjsDefinedForCurSub;
	this.RemoveFromSearchResults = DigDistMsgReader_RemoveFromSearchResults;
	this.FindThreadNextOffset = DigDistMsgReader_FindThreadNextOffset;
	this.FindThreadPrevOffset = DigDistMsgReader_FindThreadPrevOffset;
	this.SaveMsgToFile = DigDistMsgReader_SaveMsgToFile;
	this.ToggleSelectedMessage = DigDistMsgReader_ToggleSelectedMessage;
	this.MessageIsSelected = DigDistMsgReader_MessageIsSelected;
	this.AllSelectedMessagesCanBeDeleted = DigDistMsgReader_AllSelectedMessagesCanBeDeleted;
	this.DeleteSelectedMessages = DigDistMsgReader_DeleteSelectedMessages;
	this.NumSelectedMessages = DigDistMsgReader_NumSelectedMessages;

	// These two variables keep track of whether we're doing a message scan that spans
	// multiple sub-boards so that the enhanced reader function can enable use of
	// the > key to go to the next sub-board.
	this.doingMultiSubBoardScan = false;

	// An option for using the scrollable interface for messages with ANSI
	// content - The sysop can set this to false if the sysop thinks the
	// scrolling ANSI interface (using frame.js and scrollbar.js) doesn't
	// look good enough
	this.useScrollingInterfaceForANSIMessages = true;

	// Whether or not to pause (with a message) after doing a new message scan
	this.pauseAfterNewMsgScan = true;

	// For the message area chooser header filename & maximum number of
	// area chooser header lines to display
	this.areaChooserHdrFilenameBase = "areaChgHeader";
	this.areaChooserHdrMaxLines = 5;

	this.cfgFilename = "DDMsgReader.cfg";
	// Check the command-line arguments for a custom configuration file name
	// before reading the configuration file.
	var scriptArgsIsValid = (typeof(pScriptArgs) == "object");
	if (scriptArgsIsValid && pScriptArgs.hasOwnProperty("configfilename"))
		this.cfgFilename = pScriptArgs["configfilename"];
	// Read the settings from the config file
	this.cfgFileSuccessfullyRead = false;
	this.ReadConfigFile();
	// Set any other values specified by the command-line parameters
	// Reader start mode - Read or list mode
	if (scriptArgsIsValid)
	{
		if (pScriptArgs.hasOwnProperty("startmode"))
		{
			var readerStartMode = readerModeStrToVal(pScriptArgs["startmode"]);
			if (readerStartMode != -1)
				this.startMode = readerStartMode;
		}
		// Search mode
		if (pScriptArgs.hasOwnProperty("search"))
		{
			var searchType = searchTypeStrToVal(pScriptArgs["search"]);
			if (searchType != SEARCH_NONE)
				this.searchType = searchType;
		}
	}
	// Color value adjusting (must be done after reading the config file in case
	// the color settings were changed from defaults)
	// Message list highlight colors: For each (except for the background),
	// prepend the normal attribute and append the background attribute to the end.
	// This is to ensure that high attributes don't affect the rest of the line and
	// the background attribute stays for the rest of the line.
	this.colors.msgListMsgNumHighlightColor = "\1n" + this.colors.msgListMsgNumHighlightColor + this.colors.msgListHighlightBkgColor;
	this.colors.msgListFromHighlightColor = "\1n" + this.colors.msgListFromHighlightColor + this.colors.msgListHighlightBkgColor;
	this.colors.msgListToHighlightColor = "\1n" + this.colors.msgListToHighlightColor + this.colors.msgListHighlightBkgColor;
	this.colors.msgListSubjHighlightColor = "\1n" + this.colors.msgListSubjHighlightColor + this.colors.msgListHighlightBkgColor;
	this.colors.msgListDateHighlightColor = "\1n" + this.colors.msgListDateHighlightColor + this.colors.msgListHighlightBkgColor;
	this.colors.msgListTimeHighlightColor = "\1n" + this.colors.msgListTimeHighlightColor + this.colors.msgListHighlightBkgColor;
	// Similar for the area chooser lightbar highlight colors
	this.colors.areaChooserMsgAreaNumHighlightColor = "\1n" + this.colors.areaChooserMsgAreaNumHighlightColor + this.colors.areaChooserMsgAreaBkgHighlightColor;
	this.colors.areaChooserMsgAreaDescHighlightColor = "\1n" + this.colors.areaChooserMsgAreaDescHighlightColor + this.colors.areaChooserMsgAreaBkgHighlightColor;
	this.colors.areaChooserMsgAreaDateHighlightColor = "\1n" + this.colors.areaChooserMsgAreaDateHighlightColor + this.colors.areaChooserMsgAreaBkgHighlightColor;
	this.colors.areaChooserMsgAreaTimeHighlightColor = "\1n" + this.colors.areaChooserMsgAreaTimeHighlightColor + this.colors.areaChooserMsgAreaBkgHighlightColor;
	this.colors.areaChooserMsgAreaNumItemsHighlightColor = "\1n" + this.colors.areaChooserMsgAreaNumItemsHighlightColor + this.colors.areaChooserMsgAreaBkgHighlightColor;
	// Similar for the enhanced reader help line colors
	this.colors.enhReaderHelpLineGeneralColor = "\1n" + this.colors.enhReaderHelpLineGeneralColor + this.colors.enhReaderHelpLineBkgColor;
	this.colors.enhReaderHelpLineHotkeyColor = "\1n" + this.colors.enhReaderHelpLineHotkeyColor + this.colors.enhReaderHelpLineBkgColor;
	this.colors.enhReaderHelpLineParenColor = "\1n" + this.colors.enhReaderHelpLineParenColor + this.colors.enhReaderHelpLineBkgColor;
	// Similar for the lightbar message list help line colors
	this.colors.lightbarMsgListHelpLineGeneralColor = "\1n" + this.colors.lightbarMsgListHelpLineGeneralColor + this.colors.lightbarMsgListHelpLineBkgColor;
	this.colors.lightbarMsgListHelpLineHotkeyColor = "\1n" + this.colors.lightbarMsgListHelpLineHotkeyColor + this.colors.lightbarMsgListHelpLineBkgColor;
	this.colors.lightbarMsgListHelpLineParenColor = "\1n" + this.colors.lightbarMsgListHelpLineParenColor + this.colors.lightbarMsgListHelpLineBkgColor;
	// Similar for the lightbar area chooser help line colors
	this.colors.lightbarAreaChooserHelpLineGeneralColor = "\1n" + this.colors.lightbarAreaChooserHelpLineGeneralColor + this.colors.lightbarAreaChooserHelpLineBkgColor;
	this.colors.lightbarAreaChooserHelpLineHotkeyColor = "\1n" + this.colors.lightbarAreaChooserHelpLineHotkeyColor + this.colors.lightbarAreaChooserHelpLineBkgColor;
	this.colors.lightbarAreaChooserHelpLineParenColor = "\1n" + this.colors.lightbarAreaChooserHelpLineParenColor + this.colors.lightbarAreaChooserHelpLineBkgColor;
	// Prepend most of the text strings with the normal attribute (if they don't
	// have it already) to make sure the correct colors are used.
	for (var prop in this.text)
	{
		if ((prop != "scrollbarBGChar") && (prop != "scrollbarScrollBlockChar"))
		{
			if ((this.text[prop].length > 0) && (this.text[prop].charAt(0) != "\1n"))
				this.text[prop] = "\1n" + this.text[prop];
		}
	}

	// this.tabReplacementText will be the text that tabs will be replaced
	// with in enhanced reader mode
	this.tabReplacementText = format("%" + this.numTabSpaces + "s", "");

	// Construct the message information format string.  These must be done after
	// reading the configuration file, because the configuration file specifies the
	// colors to use.
	this.sMsgInfoFormatStr = this.colors.msgListMsgNumColor + "%" + this.MSGNUM_LEN + "d%s"
	                       + this.colors.msgListFromColor + "%-" + this.FROM_LEN + "s "
	                       + this.colors.msgListToColor + "%-" + this.TO_LEN + "s "
	                       + this.colors.msgListSubjectColor + "%-" + this.SUBJ_LEN + "s "
	                       + this.colors.msgListDateColor + "%-" + this.DATE_LEN + "s "
	                       + this.colors.msgListTimeColor + "%-" + this.TIME_LEN + "s";
	// Message information format string with colors to use when the message is
	// written to the user.
	this.sMsgInfoToUserFormatStr = this.colors.msgListToUserMsgNumColor + "%" + this.MSGNUM_LEN + "d%s"
	                             + this.colors.msgListToUserFromColor
	                             + "%-" + this.FROM_LEN + "s " + this.colors.msgListToUserToColor + "%-"
	                             + this.TO_LEN + "s " + this.colors.msgListToUserSubjectColor + "%-"
	                             + this.SUBJ_LEN + "s " + this.colors.msgListToUserDateColor
	                             + "%-" + this.DATE_LEN + "s " + this.colors.msgListToUserTimeColor
	                             + "%-" + this.TIME_LEN + "s";
	// Message information format string with colors to use when the message is
	// from the user.
	this.sMsgInfoFromUserFormatStr = this.colors.msgListFromUserMsgNumColor + "%" + this.MSGNUM_LEN + "d%s"
	                               + this.colors.msgListFromUserFromColor
	                               + "%-" + this.FROM_LEN + "s " + this.colors.msgListFromUserToColor + "%-"
	                               + this.TO_LEN + "s " + this.colors.msgListFromUserSubjectColor + "%-"
	                               + this.SUBJ_LEN + "s " + this.colors.msgListFromUserDateColor
	                               + "%-" + this.DATE_LEN + "s " + this.colors.msgListFromUserTimeColor
	                               + "%-" + this.TIME_LEN + "s";
	// Highlighted message information line for the message list (used for the
	// lightbar interface)
	this.sMsgInfoFormatHighlightStr = this.colors.msgListMsgNumHighlightColor
	                                + "%" + this.MSGNUM_LEN + "d%s"
	                                + this.colors.msgListFromHighlightColor + "%-" + this.FROM_LEN
	                                + "s " + this.colors.msgListToHighlightColor + "%-" + this.TO_LEN + "s "
	                                + this.colors.msgListSubjHighlightColor + "%-" + this.SUBJ_LEN + "s "
	                                + this.colors.msgListDateHighlightColor + "%-" + this.DATE_LEN + "s "
	                                + this.colors.msgListTimeHighlightColor + "%-" + this.TIME_LEN + "s";

	// If the user's terminal doesn't support ANSI, then append a newline to
	// the end of the format string (we won't be able to move the cursor).
	if (!canDoHighASCIIAndANSI())
	{
		this.sMsgInfoFormatStr += "\r\n";
		this.sMsgInfoToUserFormatStr += "\r\n";
		this.sMsgInfoFromUserFormatStr += "\r\n";
		this.sMsgInfoFormatHighlightStr += "\r\n";
	}
	// Enhanced reader help line (will be set up in
	// DigDistMsgReader_SetEnhancedReaderHelpLine())
	this.enhReadHelpLine = "";

	// Read the enhanced message header file and populate this.enhMsgHeaderLines,
	// the header text for enhanced reader mode.  The enhanced reader header file
	// name will start with 'enhMsgHeader', and there can be multiple versions for
	// different terminal widths (i.e., msgHeader_80.ans for an 80-column console
	// and msgHeader_132 for a 132-column console).
	this.enhMsgHeaderLines = loadTextFileIntoArray("enhMsgHeader", 10);
	// If the header file didn't exist, then populate the enhanced reader header
	// array with default lines.
	if (this.enhMsgHeaderLines.length == 0)
	{
		// Group name: 20% of console width
		// Sub-board name: 34% of console width
		var msgGrpNameLen = Math.floor(console.screen_columns * 0.2);
		var subBoardNameLen = Math.floor(console.screen_columns * 0.34);
		var hdrLine1 = "\1n\1h\1c" + UPPER_LEFT_SINGLE + HORIZONTAL_SINGLE + "\1n\1c"
		             + HORIZONTAL_SINGLE + " \1h@GRP-L";
		var numChars = msgGrpNameLen - 7;
		for (var i = 0; i < numChars; ++i)
			hdrLine1 += "#";
		hdrLine1 += "@ @SUB-L";
		numChars = subBoardNameLen - 7;
		for (var i = 0; i < numChars; ++i)
			hdrLine1 += "#";
		hdrLine1 += "@\1k";
		numChars = console.screen_columns - console.strlen(hdrLine1) - 4;
		for (var i = 0; i < numChars; ++i)
			hdrLine1 += HORIZONTAL_SINGLE;
		hdrLine1 += "\1n\1c" + HORIZONTAL_SINGLE + HORIZONTAL_SINGLE + "\1h"
		         + HORIZONTAL_SINGLE + UPPER_RIGHT_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine1);
		var hdrLine2 = "\1n\1c" + VERTICAL_SINGLE + "\1h\1k" + BLOCK1 + BLOCK2
		             + BLOCK3 + "\1gM\1n\1gsg#\1h\1c: \1b@MSG_NUM_AND_TOTAL-L";
		numChars = console.screen_columns - 32;
		for (var i = 0; i < numChars; ++i)
			hdrLine2 += "#";
		hdrLine2 += "@\1n\1c" + VERTICAL_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine2);
		var hdrLine3 = "\1n\1h\1k" + VERTICAL_SINGLE + BLOCK1 + BLOCK2 + BLOCK3
		             + "\1gF\1n\1grom\1h\1c: \1b@MSG_FROM-L";
		numChars = console.screen_columns - 23;
		for (var i = 0; i < numChars; ++i)
			hdrLine3 += "#";
		hdrLine3 += "@\1k" + VERTICAL_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine3);
		var hdrLine4 = "\1n\1h\1k" + VERTICAL_SINGLE + BLOCK1 + BLOCK2 + BLOCK3
		             + "\1gT\1n\1go  \1h\1c: \1b@MSG_TO-L";
		numChars = console.screen_columns - 21;
		for (var i = 0; i < numChars; ++i)
			hdrLine4 += "#";
		hdrLine4 += "@\1k" + VERTICAL_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine4);
		var hdrLine5 = "\1n\1h\1k" + VERTICAL_SINGLE + BLOCK1 + BLOCK2 + BLOCK3
		             + "\1gS\1n\1gubj\1h\1c: \1b@MSG_SUBJECT-L";
		numChars = console.screen_columns - 26;
		for (var i = 0; i < numChars; ++i)
			hdrLine5 += "#";
		hdrLine5 += "@\1k" + VERTICAL_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine5);
		var hdrLine6 = "\1n\1c" + VERTICAL_SINGLE + "\1h\1k" + BLOCK1 + BLOCK2 + BLOCK3
		             + "\1gD\1n\1gate\1h\1c: \1b@MSG_DATE-L";
		numChars = console.screen_columns - 23;
		for (var i = 0; i < numChars; ++i)
			hdrLine6 += "#";
		hdrLine6 += "@\1n\1c" + VERTICAL_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine6);
		var hdrLine7 = "\1n\1h\1c" + BOTTOM_T_SINGLE + HORIZONTAL_SINGLE + "\1n\1c"
		             + HORIZONTAL_SINGLE + HORIZONTAL_SINGLE + "\1h\1k";
		numChars = console.screen_columns - 8;
		for (var i = 0; i < numChars; ++i)
			hdrLine7 += HORIZONTAL_SINGLE;
		hdrLine7 += "\1c" + HORIZONTAL_SINGLE + HORIZONTAL_SINGLE + "\1h"
		         + HORIZONTAL_SINGLE + BOTTOM_T_SINGLE;
		this.enhMsgHeaderLines.push(hdrLine7);
	}
	// Save the enhanced reader header width.  This will be the length of the longest
	// line in the header.
	this.enhMsgHeaderWidth = 0;
	if (this.enhMsgHeaderLines.length > 0)
	{
		var lineLen = 0;
		for (var i = 0; i < this.enhMsgHeaderLines.length; ++i)
		{
			lineLen = console.strlen(this.enhMsgHeaderLines[i]);
			if (lineLen > this.enhMsgHeaderWidth)
				this.enhMsgHeaderWidth = lineLen;
		}
	}

	// Message display area information
	this.msgAreaTop = this.enhMsgHeaderLines.length + 1;
	this.msgAreaBottom = console.screen_rows-1;  // The last line of the message area
	// msgAreaLeft and msgAreaRight are the rightmost and leftmost columns of the
	// message area, respectively.  These are 1-based.  1 is subtracted from
	// msgAreaRight to leave room for the scrollbar in enhanced reader mode.
	this.msgAreaLeft = 1;
	this.msgAreaRight = console.screen_columns - 1;
	this.msgAreaWidth = this.msgAreaRight - this.msgAreaLeft + 1;
	this.msgAreaHeight = this.msgAreaBottom - this.msgAreaTop + 1;

	//////////////////////////////////////////////
	// Things related to changing to a different message group & sub-board

	// In the message area lists (for changing to another message area), the
	// date & time of the last-imported message will be shown.
	// msgAreaList_lastImportedMsg_showImportTime is a boolean to specify
	// whether or not to use the import time for the last-imported message.
	// If false, the message written time will be used.
	this.msgAreaList_lastImportedMsg_showImportTime = true;

	// These variables store the lengths of the various columns displayed in
	// the message group/sub-board lists.
	// Sub-board info field lengths
	this.areaNumLen = 4;
	this.numItemsLen = 4;
	this.dateLen = 10; // i.e., YYYY-MM-DD
	this.timeLen = 8;  // i.e., HH:MM:SS
	// Sub-board name length - This should be 47 for an 80-column display.
	this.subBoardNameLen = console.screen_columns - this.areaNumLen -
	this.numItemsLen - this.dateLen - this.timeLen - 7;
	// Message group description length (67 chars on an 80-column screen)
	this.msgGrpDescLen = console.screen_columns - this.areaNumLen -
	this.numItemsLen - 5;

	// Some methods for choosing the message area
	this.WriteChgMsgAreaKeysHelpLine = DigDistMsgReader_WriteLightbarChgMsgAreaKeysHelpLine;
	this.WriteGrpListHdrLine = DigDistMsgReader_WriteGrpListTopHdrLine;
	this.WriteSubBrdListHdr1Line = DMsgAreaChooser_WriteSubBrdListHdr1Line;
	this.SelectMsgArea = DigDistMsgReader_SelectMsgArea;
	this.SelectMsgArea_Lightbar = DigDistMsgReader_SelectMsgArea_Lightbar;
	this.SelectSubBoard_Lightbar = DigDistMsgReader_SelectSubBoard_Lightbar;
	this.SelectMsgArea_Traditional = DigDistMsgReader_SelectMsgArea_Traditional;
	this.ListMsgGrps = DigDistMsgReader_ListMsgGrps_Traditional;
	this.ListSubBoardsInMsgGroup = DigDistMsgReader_ListSubBoardsInMsgGroup_Traditional;
	// Lightbar-specific methods
	this.ListScreenfulOfMsgGrps = DigDistMsgReader_listScreenfulOfMsgGrps;
	this.WriteMsgGroupLine = DigDistMsgReader_writeMsgGroupLine;
	this.UpdateMsgAreaPageNumInHeader = DigDistMsgReader_updateMsgAreaPageNumInHeader;
	this.ListScreenfulOfSubBrds = DigDistMsgReader_ListScreenfulOfSubBrds;
	this.WriteMsgSubBoardLine = DigDistMsgReader_WriteMsgSubBrdLine;
	// Choose Message Area help screen
	this.ShowChooseMsgAreaHelpScreen = DigDistMsgReader_showChooseMsgAreaHelpScreen;
	// Method to build the sub-board printf information for a message
	// group
	this.BuildSubBoardPrintfInfoForGrp = DigDistMsgReader_BuildSubBoardPrintfInfoForGrp;
	// Methods for calculating a page number for a message list item
	this.CalcTraditionalMsgListTopIdx = DigDistMsgReader_CalcTraditionalMsgListTopIdx;
	this.CalcLightbarMsgListTopIdx = DigDistMsgReader_CalcLightbarMsgListTopIdx;
	this.CalcMsgListScreenIdxVarsFromMsgNum = DigDistMsgReader_CalcMsgListScreenIdxVarsFromMsgNum;
	// A method for validating a user's choice of message area
	this.ValidateMsgAreaChoice = DigDistMsgReader_ValidateMsgAreaChoice;

	// printf strings for message group/sub-board lists
	// Message group information (printf strings)
	this.msgGrpListPrintfStr = "\1n " + this.colors.areaChooserMsgAreaNumColor + "%" + this.areaNumLen
	                         + "d " + this.colors.areaChooserMsgAreaDescColor + "%-"
	                         + this.msgGrpDescLen + "s " + this.colors.areaChooserMsgAreaNumItemsColor
	                         + "%" + this.numItemsLen + "d";
	this.msgGrpListHilightPrintfStr = "\1n" + this.colors.areaChooserMsgAreaBkgHighlightColor + " "
	                                + "\1n" + this.colors.areaChooserMsgAreaBkgHighlightColor
	                                + this.colors.areaChooserMsgAreaNumHighlightColor + "%" + this.areaNumLen
	                                + "d \1n" + this.colors.areaChooserMsgAreaBkgHighlightColor
	                                + this.colors.areaChooserMsgAreaDescHighlightColor + "%-"
	                                + this.msgGrpDescLen + "s \1n" + this.colors.areaChooserMsgAreaBkgHighlightColor
	                                + this.colors.areaChooserMsgAreaNumItemsHighlightColor + "%" + this.numItemsLen
	                                + "d";
	// Message group list header (printf string)
	this.msgGrpListHdrPrintfStr = this.colors.areaChooserMsgAreaHeaderColor + "%6s %-"
	                            + +(this.msgGrpDescLen-8) + "s %-12s";
	// Sub-board information header (printf string)
	this.subBoardListHdrPrintfStr = this.colors.areaChooserMsgAreaHeaderColor + " %5s %-"
	                              + +(this.subBoardNameLen-3) + "s %-7s %-19s";
	// Lightbar area chooser help line text
	// TODO: Account for wide terminals?
	this.lightbarAreaChooserHelpLine = "\1n"
	                          + this.colors.lightbarAreaChooserHelpLineHotkeyColor + ""
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + ", "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + ""
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + ", "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "ENTER"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + ", "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "HOME"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + ", "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "END"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + ", "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "#"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + ", "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "N"
							  + this.colors.lightbarAreaChooserHelpLineParenColor + ")"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + "ext pg, "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "P"
							  + this.colors.lightbarAreaChooserHelpLineParenColor + ")"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + "rev pg, "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "F"
							  + this.colors.lightbarAreaChooserHelpLineParenColor + ")"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + "irst pg, "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "L"
							  + this.colors.lightbarAreaChooserHelpLineParenColor + ")"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + "ast pg, "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "Q"
							  + this.colors.lightbarAreaChooserHelpLineParenColor + ")"
							  + this.colors.lightbarAreaChooserHelpLineGeneralColor + "uit, "
							  + this.colors.lightbarAreaChooserHelpLineHotkeyColor + "?   ";
	// this.subBoardListPrintfInfo will be an array of printf strings
	// for the sub-boards in the message groups.  The index is the
	// message group index.  The sub-board printf information is created
	// on the fly the first time the user lists sub-boards for a message
	// group.
	this.subBoardListPrintfInfo = new Array();

	// Variables to save the top message index for the traditional & lightbar
	// message lists.  Initialize them to -1 to mean the message list hasn't been
	// displayed yet - In that case, the lister will use the user's last
	// read pointer.
	this.tradListTopMsgIdx = -1;
	this.tradMsgListNumLines = console.screen_rows-3;
	if (this.displayBoardInfoInHeader)
		this.tradMsgListNumLines -= 2;
	this.lightbarListTopMsgIdx = -1;
	this.lightbarMsgListNumLines = console.screen_rows-2;
	this.lightbarMsgListStartScreenRow = 2; // The first line number on the screen for the message list
	// If we will be displaying the message group and sub-board in the
	// header at the top of the screen (an additional 2 lines), then
	// update this.lightbarMsgListNumLines and this.lightbarMsgListStartScreenRow to
	// account for this.
	if (this.displayBoardInfoInHeader)
	{
		this.lightbarMsgListNumLines -= 2;
		this.lightbarMsgListStartScreenRow += 2;
	}
	// The selected message index for the lightbar message list (initially -1, will
	// be set in the lightbar list method)
	this.lightbarListSelectedMsgIdx = -1;
	// The selected message cursor position for the lightbar message list (initially
	// null, will be set in the lightbar list message)
	this.lightbarListCurPos = null;

	// selectedMessages will be an object (indexed by sub-board internal code)
	// containing objects that contain message indexes (as properties) for the
	// sub-boards.  Messages can be selected by the user for doing things such
	// as a batch delete, etc.
	this.selectedMessages = new Object();

	// areaChangeHdrLines is an array of text lines to use as a header to display
	// above the message area changer lists.
	this.areaChangeHdrLines = loadTextFileIntoArray(this.areaChooserHdrFilenameBase, this.areaChooserHdrMaxLines);
}

// For the DigDistMsgReader class: Sets the subBoardCode property and also
// sets the readingPersonalEmail property, a boolean for whether or not
// personal email is being read (whether the sub-board code is "mail")
//
// Parameters:
//  pSubCode: The sub-board code to set in the object
function DigDistMsgReader_SetSubBoardCode(pSubCode)
{
	this.subBoardCode = pSubCode;
	this.readingPersonalEmail = (this.subBoardCode == "mail");
}

// Refreshes a message header in the message header arrays in this.msgSearchHdrs.
//
// Parameters:
//  pMsgIndex: The index (0-based) of the message header
//  pAttrib: Optional - An attribute to apply.  If this is is not specified,
//           then the message header will be retrieved from the message base.
// pSubBoardCode: Optional - An internal sub-board code.  If not specified, then
//                this method will default to this.subBoardCode.
function DigDistMsgReader_RefreshSearchResultMsgHdr(pMsgIndex, pAttrib, pSubBoardCode)
{
	if (typeof(pMsgIndex) != "number")
		return;

	var subCode = (typeof(pSubBoardCode) == "string" ? pSubBoardCode : this.subBoardCode);
	if (this.msgSearchHdrs.hasOwnProperty(subCode))
	{
		var msgNum = pMsgIndex + 1;
		if (typeof(pAttrib) != "undefined")
		{
			if (this.msgSearchHdrs[this.subBoardCode].indexed.hasOwnProperty(pMsgIndex))
			{
				this.msgSearchHdrs[this.subBoardCode].indexed[pMsgIndex].attr = this.msgSearchHdrs[this.subBoardCode].indexed[pMsgIndex].attr | pAttrib;
				var msgOffsetFromHdr = this.msgSearchHdrs[this.subBoardCode].indexed[pMsgIndex].offset;
				this.msgbase.put_msg_header(true, msgOffsetFromHdr, this.msgSearchHdrs[this.subBoardCode].indexed[pMsgIndex]);
			}
		}
		else
		{
			var msgHeader = this.GetMsgHdrByIdx(pMsgIndex);
			if (this.msgSearchHdrs[this.subBoardCode].indexed.hasOwnProperty(pMsgIndex))
			{
				this.msgSearchHdrs[this.subBoardCode].indexed[pMsgIndex] = msgHeader;
				this.msgbase.put_msg_header(true, msgHeader.offset, msgHeader);
			}
		}
	}
}

// For the DigDistMsgReader class: Inputs search text from the user, then reads/lists
// messages, which will perform the search.
//
// Paramters:
//  pSearchModeStr A string to specify the lister mode to use - This can
//                 be one of the search modes to specify how to search:
//                 "keyword_search": Search the message subjects & bodies by keyword
//                 "from_name_search": Search messages by from name
//                 "to_name_search": Search messages by to name
//                 "to_user_search": Search messages by to name, to the logged-in user
//  pSubBoardCode: Optional - The Synchronet sub-board code, or "mail"
//                 for personal email.
function DigDistMsgReader_SearchMessages(pSearchModeStr, pSubBoardCode)
{
	// Convert the search mode string to an integer representing the search
	// mode.  If we get back -1, that means the search mode string was invalid.
	// If that's the case, simply list messages.  Otherwise, do the search.
	this.searchType = searchTypeStrToVal(pSearchModeStr);
	if (this.searchType == SEARCH_NONE) // No search; search mode string was invalid
	{
		// Clear the search information and read/list messages.
		this.ClearSearchData();
		this.ReadOrListSubBoard(pSubBoardCode);
	}
	else
	{
		// The search mode string was valid, so go ahead and search.
		console.print("\1n");
		console.crlf();
		var subCode = (typeof(pSubBoardCode) == "string" ? pSubBoardCode : this.subBoardCode);
		if (subCode == "mail")
			console.print("\1n" + this.text.searchingPersonalMailText);
		else
			console.print("\1n" + this.text.searchingSubBoardAbovePromptText.replace("%s", subBoardGrpAndName(bbs.cursub_code)) + "\1n");
		console.crlf();
		// Output the prompt text to the user (for modes where a prompt is needed)
		switch (this.searchType)
		{
		case SEARCH_KEYWORD:
			console.print("\1n" + this.text.searchTextPromptText);
			break;
		case SEARCH_FROM_NAME:
			console.print("\1n" + this.text.fromNamePromptText);
			break;
		case SEARCH_TO_NAME_CUR_MSG_AREA:
			console.print("\1n" + this.text.toNamePromptText);
			break;
		case SEARCH_TO_USER_CUR_MSG_AREA:
			// Note: No prompt needed for this - Will search for the user's name/handle
			console.line_counter = 0; // To prevent a pause before the message list comes up
			break;
		default:
			break;
		}
		//var promptUserForText = this.SearchTypePopulatesSearchResults();
		var promptUserForText = this.SearchTypeRequiresSearchText();
		// Get the search text from the user
		if (promptUserForText)
			this.searchString = console.getstr(512, K_UPPER);
		// If the user was prompted for search text but no search text was entered,
		// then show an abort message and don't do anything.  Otherwise, go ahead
		// and list/read messages.
		if (promptUserForText && (this.searchString.length == 0))
		{
			this.ClearSearchData();
			console.print("\1n" + this.text.abortedText);
			console.crlf();
			console.pause();
			return;
		}
		else
		{
			// List/read messages
			this.ReadOrListSubBoard(pSubBoardCode);
			// Clear the search data so that subsequent listing or reading sessions
			// don't repeat the same search
			this.ClearSearchData();
		}
	}
}

// This function clears the search data from the object.
function DigDistMsgReader_ClearSearchData()
{
   this.searchType = SEARCH_NONE;
   this.searchString == "";
   if (this.msgSearchHdrs != null)
   {
		for (var subCode in this.msgSearchHdrs)
		{
			delete this.msgSearchHdrs[subCode].indexed;
			delete this.msgSearchHdrs[subCode];
		}
		delete this.msgSearchHdrs;
		this.msgSearchHdrs = new Object();
   }
}

// For the DigDistMsgReader class: Performs message reading/listing.
// Depending on the value of this.startMode, starts in either reader
// mode or lister mode.  Uses an input loop to let the user switch
// between the two modes.
//
// Parameters:
//  pSubBoardCode: Optional - The internal code of a sub-board to read.
//                 If not specified, the internal sub-board code specified
//                 when creating the object will be used.
//  pStartingMsgOffset: Optional - The offset of a message to start at
//  pAllowChgArea: Optional boolean - Whether or not to allow changing the
//                 message area
//  pReturnOnNextAreaNav: Optional boolean - Whether or not this method should
//                        return when it would move to the next message area due
//                        navigation from the user (i.e., with the right arrow key)
//  pPauseOnNoMsgSrchResults: Optional boolean - Whether or not to pause when
//                            a message search doesn't find any search results
//                            in the current sub-board.  Defaults to true.
//
// Return value: An object with the following properties:
//               stoppedReading: Boolean - Whether or not the user stopped reading.
//                               This can also be true if there is an error.
function DigDistMsgReader_ReadOrListSubBoard(pSubBoardCode, pStartingMsgOffset,
                                              pAllowChgArea, pReturnOnNextAreaNav,
                                              pPauseOnNoMsgSrchResults)
{
   var retObj = new Object();
   retObj.stoppedReading = false;

   // Set the sub-board code if applicable
   var previousSubBoardCode = this.subBoardCode;
   if (typeof(pSubBoardCode) == "string")
   {
      if (subBoardCodeIsValid(pSubBoardCode))
         this.setSubBoardCode(pSubBoardCode);
      else
      {
         console.print("\1n\1h\1yWarning: \1wThe Message Reader connot continue because an invalid");
         console.crlf();
         console.print("sub-board code was specified (" + pSubBoardCode + "). Please notify the sysop.");
         console.crlf();
         console.pause();
         retObj.stoppedReading = true;
         return retObj;
      }
   }
   // (re)-open the message base
   if (previousSubBoardCode != this.subBoardCode)
   {
      if ((this.msgbase != null) && (this.msgbase.is_open))
         this.msgbase.close();
      this.msgbase = new MsgBase(this.subBoardCode);
   }
   else if (this.msgbase == null)
       this.msgbase = new MsgBase(this.subBoardCode);

   // Open the sub-board.  If the message base was not opened, then output
   // an error and return.
	if (!this.msgbase.is_open && !this.msgbase.open())
	{
      console.print("\1n");
      console.crlf();
      console.print("\1h\1y* \1wUnable to open message sub-board:");
      console.crlf();
      console.print(subBoardGrpAndName(this.subBoardCode));
      console.crlf();
      console.pause();
      retObj.stoppedReading = true;
      return retObj;
	}

	// Populate this.msgSearchHdrs for the current sub-board if there is a search
	// specified.  If there are no messages to read in the current sub-board, then
	// just return.
	var pauseOnNoSearchResults = (typeof(pPauseOnNoMsgSrchResults) == "boolean" ? pPauseOnNoMsgSrchResults : true);
	if (!this.PopulateHdrsIfSearch_DispErrorIfNoMsgs(true, true, pauseOnNoSearchResults))
	{
		retObj.stoppedReading = false;
		return retObj;
	}

	// Check the pAllowChgArea parameter.  If it's a boolean, then use it.  If
	// not, then check to see if we're reading personal mail - If not, then allow
	// the user to change to a different message area.
	var allowChgMsgArea = true;
	if (typeof(pAllowChgArea) == "boolean")
		allowChgMsgArea = pAllowChgArea;
	else
		allowChgMsgArea = (this.subBoardCode != "mail");
	// If reading personal email and messages haven't been collected (searched)
	// yet, then do so now.
	if (this.readingPersonalEmail && (!this.msgSearchHdrs.hasOwnProperty(this.subBoardCode)))
		this.msgSearchHdrs[this.subBoardCode] = searchMsgbase(this.subBoardCode, this.msgbase, this.searchType, this.searchString, this.readingPersonalEmailFromUser);

	// Determine whether to start in list or reader mode, depending
	// on the value of this.startMode.
	var readerMode = this.startMode;
	// User input loop
	var selectedMessageOffset = 0;
	if (typeof(pStartingMsgOffset) == "number")
		selectedMessageOffset = pStartingMsgOffset;
	else if (this.SearchingAndResultObjsDefinedForCurSub())
	{
		// If reading personal mail, start at the first unread message index
		// (or the last message, if all messages have been read)
		if (this.readingPersonalEmail)
		{
			selectedMessageOffset = this.GetLastReadMsgIdx(false); // Used to be true
			if ((selectedMessageOffset > -1) && (selectedMessageOffset < this.NumMessages() - 1))
				++selectedMessageOffset;
		}
		else
			selectedMessageOffset = 0;
	}
	else
		selectedMessageOffset = -1;
	var otherRetObj = null;
	var continueOn = true;
	while (continueOn)
	{
		switch (readerMode)
		{
			case READER_MODE_READ:
				// Call the ReadMessages method - DOn't change the sub-board,
				// and pass the selected index of the message to read.  If that
				// index is -1, the ReadMessages method will use the user's
				// last-read message index.
				otherRetObj = this.ReadMessages(null, selectedMessageOffset, true,
				                                allowChgMsgArea, pReturnOnNextAreaNav);
				// If the user wants to quit or if there was an error, then stop
				// the input loop.
				if (otherRetObj.stoppedReading)
				{
					retObj.stoppedReading = true;
					continueOn = false;
				}
				// If we're set to return on navigation to the next message area and
				// the user's last keypress was the right arrow key or next action
				// was to go to the next message area, then don't continue the input
				// loop, and also say that the user didn't stop reading.
				else if (pReturnOnNextAreaNav &&
				         ((otherRetObj.lastUserInput == KEY_RIGHT) || (otherRetObj.lastUserInput == KEY_ENTER) || (otherRetObj.lastAction == ACTION_GO_NEXT_MSG_AREA)))
				{
					retObj.stoppedReading = false;
					continueOn = false;
				}
				else if (otherRetObj.messageListReturn)
					readerMode = READER_MODE_LIST;
				break;
			case READER_MODE_LIST:
				// Note: Doing the message list is also handled in this.ReadMessages().
				// This code is here in case the reader is configured to start up
				// in list mode first.
				// Call the ListMessages method - Don't change the sub-board, and
				// have it return if the user chooses a message to read.
				otherRetObj = this.ListMessages(null, true, pAllowChgArea);
				// If the user wants to quit, set continueOn to false to get out
				// of the loop.  Otherwise, set the selected message offset to
				// what the user chose from the list.
				if (otherRetObj.lastUserInput == "Q")
				{
					retObj.stoppedReading = true;
					continueOn = false;
				}
				else
				{
					selectedMessageOffset = otherRetObj.selectedMsgOffset;
					readerMode = READER_MODE_READ;
				}
				break;
			default:
				break;
		}
	}

   // Close the message base object (if it has not been closed already),
   // re-enable the normal text attribute, and clear the screen.
   if (this.msgbase != null)
   {
      this.msgbase.close();
      this.msgbase = null;
   }
	console.clear("\1n");

	return retObj;
}
// Helper for DigDistMsgReader_ReadOrListSubBoard(): Populates this.msgSearchHdrs
// if an applicable search type is specified; also, if there are no messages in
// the current sub-board, outputs an error to the user.
//
// Parameters:
//  pCloseMsgbaseAndSetNullIfNoMsgs: Optional boolean - Whether or not to close the message
//                         base if there are no messages.  Defaults to true.
//  pOutputMessages: Boolean - Whether or not to output messages to the screen.
//                   Defaults to true.
//  pPauseOnNoMsgError: Optional boolean - Whether or not to pause for a keypress
//                      after displaying the "no messages" error.  Defaults to true.
//
// Return value: Boolean - Whether or not there are messages to read in the current
//               sub-board
function DigDistMsgReader_PopulateHdrsIfSearch_DispErrorIfNoMsgs(pCloseMsgbaseAndSetNullIfNoMsgs,
                                                 pOutputMessages, pPauseOnNoMsgError)
{
	var thereAreMessagesToRead = true;

	var outputMessages = (typeof(pOutputMessages) == "boolean" ? pOutputMessages : true);

	// If a search is is specified that would populate the search results, then
	// perform the message search for the current sub-board.
	if (this.SearchTypePopulatesSearchResults())
	{
		if (!this.msgSearchHdrs.hasOwnProperty(this.subBoardCode))
		{
			// TODO: In case new messages were posted in this sub-board, it might help
			// to check the current number of messages vs. the previous number of messages
			// and search the new messages if there are more.
			if (outputMessages)
			{
				console.crlf();
				if (this.readingPersonalEmail)
					console.print("\1n" + this.text.loadingPersonalMailText.replace("%s", subBoardGrpAndName(this.subBoardCode)));
				else
					console.print(this.text.searchingSubBoardText.replace("%s", subBoardGrpAndName(this.subBoardCode)));
			}
			this.msgSearchHdrs[this.subBoardCode] = searchMsgbase(this.subBoardCode, this.msgbase, this.searchType, this.searchString, this.readingPersonalEmailFromUser);
		}
	}
	else
	{
		// There is no search is specified, so clear the search results for the
		// current sub-board to help ensure that there are messages to read.
		if (this.msgSearchHdrs.hasOwnProperty(this.subBoardCode))
		{
			delete this.msgSearchHdrs[this.subBoardCode].indexed;
			delete this.msgSearchHdrs[this.subBoardCode];
		}
	}

	// If there are no messages to display in the current sub-board, then set the
	// return value and let the user know (if outputMessages is true).
	if (this.NumMessages() == 0)
	{
		thereAreMessagesToRead = false;
		var closeMsgbase = (typeof(pCloseMsgbaseAndSetNullIfNoMsgs) == "boolean" ? pCloseMsgbaseAndSetNullIfNoMsgs : true);
		if (closeMsgbase)
		{
			this.msgbase.close();
			this.msgbase = null;
		}
		if (outputMessages)
		{
			console.print("\1n");
			console.crlf();
			if (this.readingPersonalEmail)
				console.print(this.text.noPersonalEmailText);
			else
			{
				if (this.msgSearchHdrs.hasOwnProperty(this.subBoardCode))
					console.print(this.text.noSearchResultsInSubBoardText.replace("%s", subBoardGrpAndName(this.subBoardCode)));
				else
					console.print(this.text.noMessagesInSubBoardText.replace("%s", subBoardGrpAndName(this.subBoardCode)));
			}
			console.crlf();
			var pauseOnNoMsgsError = (typeof(pPauseOnNoMsgError) == "boolean" ? pPauseOnNoMsgError : true);
			if (pauseOnNoMsgsError)
				console.pause();
		}
	}

	return thereAreMessagesToRead;
}

// For the DigDistMsgReader class: Returns whether the search type is a type
// that would result in the search results structure being populated.  Search
// types where that wouldn't happen are SEARCH_NONE (no search) and any of the
// message scan search types.
function DigDistMsgReader_SearchTypePopulatesSearchResults()
{
	return (this.readingPersonalEmail || searchTypePopulatesSearchResults(this.searchType));
}

// For the DigDistMsgReader class: Returns whether the search type is a type
// that requires search text.  Search types that require search text are the
// keyword search, from name search, and to name search.  Search types that
// don't require search text are SEARCH_NONE (no search) & the message scan search
// types.
function DigDistMsgReader_SearchTypeRequiresSearchText()
{
	return searchTypeRequiresSearchText(this.searchType);
}

// Returns whether a search type value would populate search results.
//
// Parameters:
//  pSearchType: A search type integer value
//
// Return value: Boolean - Whether or not the search type would populate search
//               results
function searchTypePopulatesSearchResults(pSearchType)
{
	return ((pSearchType == SEARCH_KEYWORD) ||
	        (pSearchType == SEARCH_FROM_NAME) ||
	        (pSearchType == SEARCH_TO_NAME_CUR_MSG_AREA) ||
	        (pSearchType == SEARCH_TO_USER_CUR_MSG_AREA) ||
	        (pSearchType == SEARCH_TO_USER_NEW_SCAN) ||
			(pSearchType == SEARCH_TO_USER_NEW_SCAN_CUR_SUB) ||
	        (pSearchType == SEARCH_TO_USER_NEW_SCAN_CUR_GRP) ||
	        (pSearchType == SEARCH_TO_USER_NEW_SCAN_ALL) ||
	        (pSearchType == SEARCH_ALL_TO_USER_SCAN));
}

// Returns whether a search type value requires search text.
//
// Parameters:
//  pSearchType: A search type integer value
//
// Return value: Boolean - Whether or not the search type requires search text
function searchTypeRequiresSearchText(pSearchType)
{
	return ((pSearchType == SEARCH_KEYWORD) ||
	         (pSearchType == SEARCH_FROM_NAME) ||
	         (pSearchType == SEARCH_TO_NAME_CUR_MSG_AREA));
}

// For the DigDistMsgReader class: Scans the message area(s) for new messages,
// unread messages to the user, or all messages to the user.
//
// Parameters:
//  pScanCfgOpt: The scan configuration option to check for in the sub-boards
//               (from sbbsdefs.js). Supported values are SCAN_CFG_NEW (new
//               message scan) and SCAN_CFG_TOYOU (messages to the user).
//  pScanMode: The scan mode (from sbbsdefs.js).  Supported values are SCAN_NEW
//             (new message scan), SCAN_TOYOU (scan for all messages to the
//             user), and SCAN_UNREAD (scan for new messages to the user).
//  pScanScopeChar: Optional - A character (as a string) representing the scan
//                  scope: "S" for sub-board, "G" for group, or "A" for all.
//                  If this is not specified, the user will be prompted for the
//                  scan scope.
function DigDistMsgReader_MessageAreaScan(pScanCfgOpt, pScanMode, pScanScopeChar)
{
	var scanScopeChar = "";
	if ((typeof(pScanScopeChar) == "string") && /^[SGA]$/.test(pScanScopeChar))
		scanScopeChar = pScanScopeChar;
	else
	{
		// Prompt the user to scan in the current sub-board, the current message group,
		// or all.  Default to all.
		console.print(this.text.scanScopePromptText);
		scanScopeChar = console.getkeys("SGAC").toString();
		// If the user just pressed Enter without choosing anything, then abort and return.
		if (scanScopeChar.length == 0)
		{
			console.crlf();
			console.print(this.text.msgScanAbortedText);
			console.crlf();
			console.pause();
			return;
		}
	}

	// Do some logging if verbose logging is enabled
	if (gCmdLineArgVals.verboselogging)
	{
		var logMessage = "Doing a message area scan (";
		if (pScanCfgOpt == SCAN_CFG_NEW)
		{
			// The only valid value for pScanMode in this case is SCAN_NEW, so no
			// need to check pScanMode to append more to the log message.
			logMessage += "new";
		}
		else if (pScanCfgOpt == SCAN_CFG_TOYOU)
		{
			// Valid values for pScanMode in this case are SCAN_UNREAD and SCAN_TOYOU.
			if (pScanMode == SCAN_UNREAD)
				logMessage += "unread messages to the user";
			else if (pScanMode == SCAN_TOYOU)
				logMessage += "all messages to the user";
		}
		if (scanScopeChar == "A") // All sub-boards
			logMessage += ", all sub-boards";
		else if (scanScopeChar == "G") // Current message group
		{
			logMessage += ", current message group (" +
			              msg_area.grp_list[bbs.curgrp].description + ")";
		}
		else if (scanScopeChar == "S") // Current sub-board
		{
			logMessage += ", current sub-board (" +
			              msg_area.grp_list[bbs.curgrp].description + " - " +
						  msg_area.grp_list[bbs.curgrp].sub_list[bbs.cursub].description + ")";
		}
		logMessage += ")";
		writeToSysAndNodeLog(logMessage);
	}

	// Save the original search type, sub-board code, searched message headers,
	// etc. to be restored later
	var originalSearchType = this.searchType;
	var originalSubBoardCode = this.subBoardCode;
	var originalBBSCurGrp = bbs.curgrp;
	var originalBBSCurSub = bbs.cursub;
	var originalMsgSrchHdrs = this.msgSearchHdrs;

	// Make sure there is no search data
	this.ClearSearchData();

	// If the object's message base is currently open, then close it.  The object's
	// message base object will be used to open each sub-board to scan for & read
	// unread messages.
	if ((this.msgbase != null) && (this.msgbase.is_open))
		this.msgbase.close();

	// Perform the message scan
	this.doingMsgScan = true;
	var continueNewScan = true;
	var userAborted = false;
	if (scanScopeChar == "A") // All sub-board scan
	{
		this.doingMultiSubBoardScan = true;
		// Iterate through all message groups & sub-boards looking for ones with unread
		// messages.  When a sub-board with unread messages is found, then let the user
		// read messages in that sub-board.
		for (var grpIndex = 0; (grpIndex < msg_area.grp_list.length) && continueNewScan; ++grpIndex)
		{
			// Group description: msg_area.grp_list[grpIndex].description
			// Iterate through the sub-boards in this message group looking for unread messages
			for (var subIndex = 0; (subIndex < msg_area.grp_list[grpIndex].sub_list.length) && continueNewScan; ++subIndex)
			{
				// Set the console line counter to 0 to prevent screen pausing
				// when the "Searching ..." and "No messages were found" text is
				// displayed repeatedly
				console.line_counter = 0;
				// If the sub-board's access requirements allows the user to read it
				// and it's enabled in the user's message scan configuration, then go
				// ahead with this sub-board.
				// Note: Used to use this to determine whether the user could access the
				// sub-board:
				//user.compare_ars(msg_area.grp_list[grpIndex].sub_list[subIndex].ars)
				// Now using the can_read property.
				this.setSubBoardCode(msg_area.grp_list[grpIndex].sub_list[subIndex].code); // Needs to be set before getting the last read/scan pointer index
				if (msg_area.sub[this.subBoardCode].can_read &&
				    ((msg_area.sub[this.subBoardCode].scan_cfg & pScanCfgOpt) == pScanCfgOpt))
				{
					// Sub-board description: msg_area.grp_list[grpIndex].sub_list[subIndex].description
					// Open the sub-board and check for unread messages.  If there are any, then let
					// the user read the messages in the sub-board.
					//this.msgbase = new MsgBase(msg_area.grp_list[grpIndex].sub_list[subIndex].code);
					this.msgbase = new MsgBase(this.subBoardCode);
					if (this.msgbase.open())
					{
						//this.setSubBoardCode(msg_area.grp_list[grpIndex].sub_list[subIndex].code); // Needs to be set before getting the last read/scan pointer index

						// If the current sub-board contains only deleted messages,
						// then skip it.
						var scanPtrMsgIdx = this.GetScanPtrMsgIdx();
						var nonDeletedMsgsExist = (this.FindNextNonDeletedMsgIdx(scanPtrMsgIdx-1, true) > -1);
						if (!nonDeletedMsgsExist)
						{
							if (this.msgbase != null)
								this.msgbase.close();
							continue;
						}

						// In the switch cases below, bbs.curgrp and bbs.cursub are
						// temporarily changed the user's sub-board to the current
						// sub-board so that certain @-codes (such as @GRP-L@, etc.)
						// are displayed by Synchronet correctly.

						// We might want the starting message index to be different
						// depending on the scan mode.
						switch (pScanMode)
						{
							case SCAN_NEW:
								// Make sure the sub-board has some messages.  Let the user read it if
								// the scan pointer index is -1 (one unread message) or if it points to
								// a message within the number of messages in the sub-board.
								if ((this.msgbase.total_msgs > 0) && ((scanPtrMsgIdx == -1) || (scanPtrMsgIdx < this.msgbase.total_msgs-1)))
								{
									bbs.curgrp = grpIndex;
									bbs.cursub = subIndex;
									// Start at the first unread message.
									var startMsgIdx = scanPtrMsgIdx + 1;
									if (this.SearchingAndResultObjsDefinedForCurSub())
										startMsgIdx = 0;
									// Allow the user to read messages in this sub-board.  Don't allow
									// the user to change to a different message area, don't pause
									// when there's no search results in a sub-board, and return
									// instead of going to the next sub-board via navigation.
									var readRetObj = this.ReadOrListSubBoard(null, startMsgIdx, false, true, false);
									// If the user stopped reading & decided to quit, then exit the
									// message scan loops.
									if (readRetObj.stoppedReading)
									{
										continueNewScan = false;
										userAborted = true;
									}
								}
								break;
							case SCAN_TOYOU: // All messages to the user
								bbs.curgrp = grpIndex;
								bbs.cursub = subIndex;
								// Search for messages to the user in the current sub-board
								// and let the user read the sub-board if messages are
								// found.  Don't allow the user to change to a different
								// message area, don't pause when there's no search results
								// in a sub-board, and return instead of going to the next
								// sub-board via navigation.
								this.searchType = SEARCH_TO_USER_CUR_MSG_AREA;
								var readRetObj = this.ReadOrListSubBoard(null, 0, false, true, false);
								// If the user stopped reading & decided to quit, then exit the
								// message scan loops.
								if (readRetObj.stoppedReading)
								{
									continueNewScan = false;
									userAborted = true;
								}
								break;
							case SCAN_UNREAD: // New (unread) messages to the user
								bbs.curgrp = grpIndex;
								bbs.cursub = subIndex;
								// Search for messages to the user in the current sub-board
								// and let the user read the sub-board if messages are
								// found.  Don't allow the user to change to a different
								// message area, don't pause when there's no search results
								// in a sub-board, and return instead of going to the next
								// sub-board via navigation.
								this.searchType = SEARCH_TO_USER_NEW_SCAN;
								var readRetObj = this.ReadOrListSubBoard(null, 0, false, true, false);
								// If the user stopped reading & decided to quit, then exit the
								// message scan loops.
								if (readRetObj.stoppedReading)
								{
									continueNewScan = false;
									userAborted = true;
								}
								break;
							default:
								break;
						}

						if (this.msgbase != null)
							this.msgbase.close();
					}
				}
			}
		}
	}
	else if (scanScopeChar == "G") // Group scan
	{
		this.doingMultiSubBoardScan = true;
		// Iterate through the sub-boards in the current message group looking for messages
		for (var subIndex = 0; (subIndex < msg_area.grp_list[bbs.curgrp].sub_list.length) && continueNewScan; ++subIndex)
		{
			// Set the console line counter to 0 to prevent screen pausing
			// when the "Searching ..." and "No messages were found" text is
			// displayed repeatedly
			console.line_counter = 0;
			// If the sub-board's access requirements allows the user to read it
			// and it's enabled in the user's message scan configuration, then go
			// ahead with this sub-board.
			this.setSubBoardCode(msg_area.grp_list[bbs.curgrp].sub_list[subIndex].code); // Needs to be set before the last read/scan pointer message
			if (msg_area.sub[this.subBoardCode].can_read &&
			    ((msg_area.sub[this.subBoardCode].scan_cfg & pScanCfgOpt) == pScanCfgOpt))
			{
				// Sub-board description: msg_area.grp_list[bbs.curgrp].sub_list[subIndex].description
				// Open the sub-board and check for unread messages.  If there are any, then let
				// the user read the messages in the sub-board.
				//this.msgbase = new MsgBase(msg_area.grp_list[bbs.curgrp].sub_list[subIndex].code);
				this.msgbase = new MsgBase(this.subBoardCode);
				if (this.msgbase.open())
				{
					// The following line is now done before the 'if' statement above
					//this.setSubBoardCode(msg_area.grp_list[bbs.curgrp].sub_list[subIndex].code); // Needs to be set before the last read/scan pointer message

					// If the current sub-board contains only deleted messages,
					// then skip it.
					var scanPtrMsgIdx = this.GetScanPtrMsgIdx();
					var nonDeletedMsgsExist = (this.FindNextNonDeletedMsgIdx(scanPtrMsgIdx-1, true) > -1);
					if (!nonDeletedMsgsExist)
					{
						if (this.msgbase != null)
							this.msgbase.close();
						continue;
					}

					// Temporarily change the user's sub-board to the current
					// sub-board so that certain @-codes (such as @GRP-L@, etc.)
					// are displayed by Synchronet correctly.
					bbs.curgrp = msg_area.sub[this.subBoardCode].grp_index;
					bbs.cursub = msg_area.sub[this.subBoardCode].index;

					// We might want the starting message index to be different
					// depending on the scan mode.
					switch (pScanMode)
					{
						case SCAN_NEW:
							// Make sure the sub-board has some messages.  Let the user read it if
							// the scan pointer index is -1 (one unread message) or if it points to
							// a message within the number of messages in the sub-board.
							if ((this.msgbase.total_msgs > 0) && ((scanPtrMsgIdx == -1) || (scanPtrMsgIdx < this.msgbase.total_msgs-1)))
							{
								//bbs.cursub = subIndex; // Now done a bit earlier
								// Start at the first unread message.
								var startMsgIdx = scanPtrMsgIdx + 1;
								if (this.SearchingAndResultObjsDefinedForCurSub())
									startMsgIdx = 0;
								// Allow the user to read messages in this sub-board.  Don't allow
								// the user to change to a different message area, don't pause
								// when there's no search results in a sub-board, and return
								// instead of going to the next sub-board via navigation.
								var readRetObj = this.ReadOrListSubBoard(null, startMsgIdx, false, true, false);
								// If the user stopped reading & decided to quit, then exit the
								// message scan loops.
								if (readRetObj.stoppedReading)
								{
									continueNewScan = false;
									userAborted = true;
								}
							}
							break;
						case SCAN_TOYOU: // All messages to the user
							//bbs.cursub = subIndex; // Now done a bit earlier
							// Search for messages to the user in the current sub-board
							// and let the user read the sub-board if messages are found.
							// Don't allow the user to change to a different message
							// area, don't pause when there's no search results in a
							// sub-board, and return instead of going to the next sub-board
							// via navigation.
							this.searchType = SEARCH_TO_USER_CUR_MSG_AREA;
							var readRetObj = this.ReadOrListSubBoard(null, 0, false, true, false);
							// If the user stopped reading & decided to quit, then exit the
							// message scan loops.
							if (readRetObj.stoppedReading)
							{
								continueNewScan = false;
								userAborted = true;
							}
							break;
						case SCAN_UNREAD: // New (unread) messages to the user
							//bbs.cursub = subIndex; // Now done a bit earlier
							// Search for unread messages to the user in the current
							// sub-board and let the user read the sub-board if messages
							// are found.  Don't allow the user to change to a different
							// message area, don't pause when there's no search results
							// in a sub-board, and return instead of going to the next
							// sub-board via navigation.
							this.searchType = SEARCH_TO_USER_NEW_SCAN_CUR_GRP;
							var readRetObj = this.ReadOrListSubBoard(null, 0, false, true, false);
							// If the user stopped reading & decided to quit, then exit the
							// message scan loops.
							if (readRetObj.stoppedReading)
							{
								continueNewScan = false;
								userAborted = true;
							}
							break;
						default:
							break;
					}

					if (this.msgbase != null)
						this.msgbase.close();
				}
			}
		}
	}
	else if (scanScopeChar == "S") // Current sub-board scan
	{
		this.doingMultiSubBoardScan = false;
		// If the command-line arguments don't specify the sub-board code or
		// the user is reading personal email, then set the object's sub-board
		// code to the user's current sub-board code (bbs.cursub_code) to ensure
		// that we open the correct messagebase and so that @-codes, etc. display
		// for the correct sub-board.
		if (!gCmdLineArgVals.hasOwnProperty("subboard") || gListPersonalEmailCmdLineOpt)
			this.setSubBoardCode(bbs.cursub_code);
		// Make sure the user has access permissions for the current sub-board and
		// has it set up in their scan configuration before letting the user read
		// it.
		if (msg_area.sub[this.subBoardCode].can_read &&
		    ((msg_area.sub[this.subBoardCode].scan_cfg & pScanCfgOpt) == pScanCfgOpt))
		{
			this.msgbase = new MsgBase(this.subBoardCode);
			//this.msgbase = new MsgBase(bbs.cursub_code);
			if (this.msgbase.open())
			{
				// Temporarily change the user's sub-board to the current
				// sub-board so that certain @-codes (such as @GRP-L@, etc.)
				// are displayed by Synchronet correctly.
				bbs.curgrp = msg_area.sub[this.subBoardCode].grp_index;
				bbs.cursub = msg_area.sub[this.subBoardCode].index;

				//this.setSubBoardCode(bbs.cursub_code); // Needs to be set before getting the last read/scan pointer message

				// Only scan this sub-board if it contains messages that are not
				// marked as deleted.
				var scanPtrMsgIdx = this.GetScanPtrMsgIdx();
				var nonDeletedMsgsExist = (this.FindNextNonDeletedMsgIdx(scanPtrMsgIdx-1, true) > -1);
				if (nonDeletedMsgsExist)
				{
					// We might want the starting message index to be different
					// depending on the scan mode.
					switch (pScanMode)
					{
						case SCAN_NEW:
							// Make sure the sub-board has some messages.  Let the user read it if
							// the scan pointer index is -1 (one unread message) or if it points to
							// a message within the number of messages in the sub-board.
							if ((this.msgbase.total_msgs > 0) && ((scanPtrMsgIdx == -1) || (scanPtrMsgIdx < this.msgbase.total_msgs-1)))
							{
								if (this.subBoardCode != "mail")
									bbs.cursub = msg_area.sub[bbs.cursub_code].index;
								// Start at the first unread message.
								var startMsgIdx = scanPtrMsgIdx + 1;
								if (this.SearchingAndResultObjsDefinedForCurSub())
									startMsgIdx = 0;
								// Allow the user to read messages in this sub-board.  Don't allow
								// the user to change to a different message area, don't pause
								// when there's no search results in a sub-board, and return
								// instead of going to the next sub-board via navigation.
								var readRetObj = this.ReadOrListSubBoard(null, startMsgIdx, false, true, true);
								userAborted = readRetObj.stoppedReading;
							}
							break;
						case SCAN_TOYOU: // All messages to the user
							if (this.subBoardCode != "mail")
								bbs.cursub = msg_area.sub[bbs.cursub_code].index;
							// Set the search type to messages to the user and let the user
							// read the sub-board.  ReadOrListSubBoard() will do the search.
							// Don't allow the user to change to a different message area.
							this.searchType = SEARCH_TO_USER_CUR_MSG_AREA;
							var readRetObj = this.ReadOrListSubBoard(null, 0, false, true, true);
							userAborted = readRetObj.stoppedReading;
							break;
						case SCAN_UNREAD: // New (unread) messages to the user
							bbs.cursub = msg_area.sub[bbs.cursub_code].index;
							// Set the search type to messages to the user and let the user
							// read the sub-board.  ReadOrListSubBoard() will do the search.
							// Don't allow the user to change to a different message area.
							this.searchType = SEARCH_TO_USER_NEW_SCAN_CUR_SUB;
							bbs.cursub = msg_area.sub[bbs.cursub_code].index;
							var readRetObj = this.ReadOrListSubBoard(null, 0, false, true, true);
							userAborted = readRetObj.stoppedReading;
							break;
						default:
							break;
					}
				}

				if (this.msgbase != null)
					this.msgbase.close();
			}
		}
	}

	// Restore the original sub-board code, searched message headers, etc.
	this.searchType = originalSearchType;
	this.setSubBoardCode(originalSubBoardCode);
	this.msgSearchHdrs = originalMsgSrchHdrs;
	bbs.curgrp = originalBBSCurGrp;
	bbs.cursub = originalBBSCurSub;
	if ((this.msgbase != null) && (this.msgbase.is_open))
		this.msgbase.close();
	this.msgbase = new MsgBase(this.subBoardCode);
	this.doingMultiSubBoardScan = false;
	this.doingMsgScan = false;

	if (this.pauseAfterNewMsgScan)
	{
		console.crlf();
		if (userAborted)
			console.print("\1n" + this.text.msgScanAbortedText + "\1n");
		else
			console.print("\1n" + this.text.msgScanCompleteText + "\1n");
		console.crlf();
		console.pause();
	}
}

// For the DigDistMsgReader class: Performs the message reading activity.
//
// Parameters:
//  pSubBoardCode: Optional - The internal code of a sub-board to read.
//                 If not specified, the internal sub-board code specified
//                 when creating the object will be used.
//  pStartingMsgOffset: Optional - The offset of a message to start at
//  pReturnOnMessageList: Optional boolean - Whether or not to quit when the
//                      user wants to list messages (used when this method
//                      is called from ReadOrListSubBoard()).
//  pAllowChgArea: Optional boolean - Whether or not to allow changing the
//                 message area
//  pReturnOnNextAreaNav: Optional boolean - Whether or not this method should
//                        return when it would move to the next message area due
//                        navigation from the user (i.e., with the right arrow
//                        key or with < (go to previous message area) or > (go
//                        to next message area))
//
// Return value: An object that has the following properties:
//               lastUserInput: The user's last keypress/input
//               lastAction: The last action chosen by the user based on their
//                           last keypress, etc.
//               stoppedReading: Boolean - Whether reading has stopped
//                               (due to user quitting, error, or otherwise)
//               messageListReturn: Boolean - Whether this method is returning for
//                                  the caller to display the message list.  This
//                                  will only be true when the pReturnOnMessageList
//                                  parameter is true and the user wants to list
//                                  messages.
function DigDistMsgReader_ReadMessages(pSubBoardCode, pStartingMsgOffset, pReturnOnMessageList,
                                       pAllowChgArea, pReturnOnNextAreaNav)
{
	var retObj = new Object();
	retObj.lastUserInput = "";
	retObj.lastAction = ACTION_NONE;
	retObj.stoppedReading = false;
	retObj.messageListReturn = false;

	// If the passed-in sub-board code was different than what was set in the object before,
	// then open the new message sub-board.
	var previousSubBoardCode = this.subBoardCode;
	if (typeof(pSubBoardCode) == "string")
	{
		if (subBoardCodeIsValid(pSubBoardCode))
		this.setSubBoardCode(pSubBoardCode);
		else
		{
			console.print("\1n\1h\1yWarning: \1wThe Message Reader connot continue because an invalid");
			console.crlf();
			console.print("sub-board code was specified (" + pSubBoardCode + "). Please notify the sysop.");
			console.crlf();
			console.pause();
			retObj.stoppedReading = true;
			return retObj;
		}
	}
	if (this.subBoardCode.length == 0)
	{
		console.print("\1n\1h\1yWarning: \1wThe Message Reader connot continue because no message");
		console.crlf();
		console.print("sub-board was specified. Please notify the sysop.");
		console.crlf();
		console.pause();
		retObj.stoppedReading = true;
		return retObj;
	}
	if (previousSubBoardCode != this.subBoardCode)
	{
		if ((this.msgbase != null) && (this.msgbase.is_open))
			this.msgbase.close();
		this.msgbase = new MsgBase(this.subBoardCode);
	}
	else if (this.msgbase == null)
		this.msgbase = new MsgBase(this.subBoardCode);

	// If the message base was not opened, then output an error and return.
	if (!this.msgbase.is_open && !this.msgbase.open())
	{
		console.print("\1n");
		console.crlf();
		console.print("\1h\1y* \1wUnable to open message sub-board:");
		console.crlf();
		console.print(subBoardGrpAndName(this.subBoardCode));
		console.crlf();
		console.pause();
		retObj.stoppedReading = true;
		return retObj;
	}

	// If there are no messages to display in the current sub-board, then let the
	// user know and exit.
	if (this.NumMessages() == 0)
	{
		this.msgbase.close();
		this.msgbase = null;
		console.clear("\1n");
		console.center("\1n\1h\1yThere are no messages to display.");
		console.crlf();
		console.pause();
		retObj.stoppedReading = true;
		return retObj;
	}

	// Check the pAllowChgArea parameter.  If it's a boolean, then use it.  If
	// not, then check to see if we're reading personal mail - If not, then allow
	// the user to change to a different message area.
	var allowChgMsgArea = true;
	if (typeof(pAllowChgArea) == "boolean")
		allowChgMsgArea = pAllowChgArea;
	else
		allowChgMsgArea = (this.subBoardCode != "mail");
	// If reading personal email and messages haven't been collected (searched)
	// yet, then do so now.
	if (this.readingPersonalEmail && (!this.msgSearchHdrs.hasOwnProperty(this.subBoardCode)))
		this.msgSearchHdrs[this.subBoardCode] = searchMsgbase(this.subBoardCode, this.msgbase, this.searchType, this.searchString, this.readingPersonalEmailFromUser);

	// Determine the index of the message to start at.  This will be
	// pStartingMsgOffset if pStartingMsgOffset is valid, or the index
	// of the user's last-read message in this sub-board.
	var msgIndex = 0;
	if ((typeof(pStartingMsgOffset) == "number") && (pStartingMsgOffset >= 0) && (pStartingMsgOffset < this.NumMessages()))
		msgIndex = pStartingMsgOffset;
	else if (this.SearchingAndResultObjsDefinedForCurSub())
		msgIndex = 0;
	else
	{
		msgIndex = this.GetLastReadMsgIdx();
		if (msgIndex == -1)
			msgIndex = 0;
	}

	// If the current message index is for a message that has been
	// deleted, then find the next non-deleted message.
	var testMsgHdr = this.GetMsgHdrByIdx(msgIndex);
	if ((testMsgHdr == null) || ((testMsgHdr.attr & MSG_DELETE) == MSG_DELETE))
	{
		// First try going forward
		var nonDeletedMsgIdx = this.FindNextNonDeletedMsgIdx(msgIndex, true);
		// If a non-deleted message was not found, then try going backward.
		if (nonDeletedMsgIdx == -1)
			nonDeletedMsgIdx = this.FindNextNonDeletedMsgIdx(msgIndex, false);
		// If a non-deleted message was found, then set msgIndex to it.
		// Otherwise, tell the user there are no messages in this sub-board
		// and return.
		if (nonDeletedMsgIdx > -1)
			msgIndex = nonDeletedMsgIdx;
		else
		{
			this.msgbase.close();
			this.msgbase = null;
			console.clear("\1n");
			console.center("\1h\1yThere are no messages to display.");
			console.crlf();
			console.pause();
			retObj.stoppedReading = true;
			return retObj;
		}
	}

	// Construct the hotkey help line (needs to be done after the message
	// base is open so that the delete & edit keys can be added correctly).
	this.SetEnhancedReaderHelpLine();

	// Get the screen ready for reading messages - First, clear the screen.
	console.clear("\1n");
	// Display the help line at the bottom of the screen
	if (this.scrollingReaderInterface && console.term_supports(USER_ANSI))
		this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
	// Input loop
	var msgHdr = null;
	var dateTimeStr = null;
	var screenY = 1; // For screen updates requiring more than one line
	var continueOn = true;
	var readMsgRetObj = null;
	// previousNextAction will store the next action from the previous iteration.
	// It is useful for some checks, such as when the current message is deleted,
	// we'll want to see if the user wanted to go to the previous message/area
	// for navigation purposes.
	var previousNextAction = ACTION_NONE;
	while (continueOn && (msgIndex >= 0) && (msgIndex < this.NumMessages()))
	{
		// Display the message with the enhanced read method
		readMsgRetObj = this.ReadMessageEnhanced(msgIndex, allowChgMsgArea);
		retObj.lastUserInput = readMsgRetObj.lastKeypress;
		retObj.lastAction = readMsgRetObj.nextAction;
		// If we should refresh the enhanced reader help line on the screen (and
		// the returned message offset is valid and the user's terminal supports ANSI),
		// then refresh the help line.
		if (readMsgRetObj.refreshEnhancedRdrHelpLine && readMsgRetObj.offsetValid && console.term_supports(USER_ANSI))
			this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
		// If the returned message offset is invalid, then quit.
		if (!readMsgRetObj.offsetValid)
		{
			continueOn = false;
			retObj.stoppedReading = true;
			break;
		}
		// If the message is marked as deleted (not by the user), then go to the
		// next/previous message
		else if (readMsgRetObj.msgDeleted)
		{
			// If the user's next action in the last iteration was to go to the
			// previous message, then go backwards; otherwise, go forward.
			if (previousNextAction == ACTION_GO_PREVIOUS_MSG)
				msgIndex = this.FindNextNonDeletedMsgIdx(msgIndex, false);
			else
				msgIndex = this.FindNextNonDeletedMsgIdx(msgIndex, true);
			continueOn = ((msgIndex >= 0) && (msgIndex < this.NumMessages()));
		}
		else if (readMsgRetObj.nextAction == ACTION_QUIT) // Quit
		{
			// Quit
			continueOn = false;
			retObj.stoppedReading = true;
			break;
		}
		else if (readMsgRetObj.lastKeypress == "R")
		{
			// Replying to the message is handled in ReadMessageEnhanced().
			// The help line at the bottom of the screen needs to be redrawn though,
			// for ANSI users.
			if (this.scrollingReaderInterface && console.term_supports(USER_ANSI))
				this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
		}
		else if (readMsgRetObj.nextAction == ACTION_GO_PREVIOUS_MSG) // Go to previous message/area
		{
			// TODO: There is some opportunity for screen redraw optimization - If
			// already at the first readable sub-board, this would redraw the
			// screen unnecessarily.  Similar for the right arrow key too.

			// The newMsgOffset value will be 0 or more if a prior non-deleted
			// message was found.  If it's -1, then allow going to the previous
			// message sub-board/group.
			if (readMsgRetObj.newMsgOffset > -1)
				msgIndex = readMsgRetObj.newMsgOffset;
			else
			{
				// The user is at the beginning of the current sub-board.
				if (allowChgMsgArea)
				{
					var goToPrevRetval = this.GoToPrevSubBoardForEnhReader(allowChgMsgArea);
					retObj.stoppedReading = goToPrevRetval.shouldStopReading;
					// If we're going to stop reading, then 
					if (retObj.stoppedReading)
						msgIndex = 0;
					else if (goToPrevRetval.changedMsgArea)
						msgIndex = goToPrevRetval.msgIndex;
				}

				// If the caller wants this method to return instead of going to the next
				// sub-board with messages, then do so.
				if (pReturnOnNextAreaNav)
					return retObj;
			}
		}
		// Go to next message action - This can happen with the right arrow key or
		// if the user deletes the message in the ReadMessageEnhanced() method.
		else if (readMsgRetObj.nextAction == ACTION_GO_NEXT_MSG)
		{
			// The newMsgOffset value will be 0 or more if a later non-deleted
			// message was found.  If it's -1, then allow going to the next
			// message sub-board/group.
			if (readMsgRetObj.newMsgOffset > -1)
				msgIndex = readMsgRetObj.newMsgOffset;
			else
			{
				// The user is at the end of the current sub-board.
				if (allowChgMsgArea && !pReturnOnNextAreaNav)
				{
					var goToNextRetval = this.GoToNextSubBoardForEnhReader(allowChgMsgArea);
					retObj.stoppedReading = goToNextRetval.shouldStopReading;
					// If we're going to stop reading, then 
					if (retObj.stoppedReading)
						msgIndex = 0;
					else if (goToNextRetval.changedMsgArea)
						msgIndex = goToNextRetval.msgIndex;
				}
				// If the caller wants this method to return instead of going to the next
				// sub-board with messages, then do so.
				if (pReturnOnNextAreaNav)
					return retObj;
			}
		}
		else if (readMsgRetObj.nextAction == ACTION_GO_FIRST_MSG) // Go to the first message
		{
			// Go to the first message that's not marked as deleted.  This passes -1 as the
			// starting message index because FindNextNonDeletedMsgIdx() will increment it
			// before searching in order to find the "next" message.
			msgIndex = this.FindNextNonDeletedMsgIdx(-1, true);
		}
		else if (readMsgRetObj.nextAction == ACTION_GO_LAST_MSG) // Go to the last message
		{
			// Go to the last message that's not marked as deleted
			msgIndex = this.FindNextNonDeletedMsgIdx(this.NumMessages(), false);
		}
		else if (readMsgRetObj.nextAction == ACTION_CHG_MSG_AREA) // Change message area, if allowed
		{
			if (allowChgMsgArea)
			{
				// Change message sub-board.  If a different sub-board was
				// chosen, then change some variables to use the new
				// chosen sub-board.
				this.SelectMsgArea();
				var chgSubBoardRetObj = this.EnhancedReaderChangeSubBoard(bbs.cursub_code);
				if (chgSubBoardRetObj.succeeded)
				{
					// Set the message index, etc.
					// If there are search results, then set msgIndex to the first
					// message.  Otherwise (if there is no search specified), then
					// set the message index to the user's last read message.
					if (this.SearchingAndResultObjsDefinedForCurSub())
						msgIndex = 0;
					else
						msgIndex = chgSubBoardRetObj.lastReadMsgIdx;
					// If the current message index is for a message that has been
					// deleted, then find the next non-deleted message.
					testMsgHdr = this.GetMsgHdrByIdx(msgIndex);
					if ((testMsgHdr == null) || ((testMsgHdr.attr & MSG_DELETE) == MSG_DELETE))
					{
						// First try going forward
						var nonDeletedMsgIdx = this.FindNextNonDeletedMsgIdx(msgIndex, true);
						// If a non-deleted message was not found, then try going backward.
						if (nonDeletedMsgIdx == -1)
							nonDeletedMsgIdx = this.FindNextNonDeletedMsgIdx(msgIndex, false);
						// If a non-deleted message was found, then set msgIndex to it.
						// Otherwise, return.
						// Note: If there are no messages in the chosen sub-board at all,
						// then the error would have already been shown.
						if (nonDeletedMsgIdx > -1)
							msgIndex = nonDeletedMsgIdx;
						else
						{
							if (this.NumMessages() != 0)
							{
								// There are messages, but none that are not deleted.
								console.clear("\1n");
								console.center("\1h\1yThere are no messages to display.");
								console.crlf();
								console.pause();
							}
							this.msgbase.close();
							retObj.stoppedReading = true;
							return retObj;
						}
					}
					// Set the hotkey help line again, since the new sub-board might have
					// different settings for whether messages can be edited or deleted,
					// then refresh it on the screen.
					var oldHotkeyHelpLine = this.enhReadHelpLine;
					this.SetEnhancedReaderHelpLine();
					if ((oldHotkeyHelpLine != this.enhReadHelpLine) && this.scrollingReaderInterface && console.term_supports(USER_ANSI))
						this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
				}
				else
				{
					retObj.stoppedReading = false;
					return retObj;
				}
			}
		}
		else if (readMsgRetObj.nextAction == ACTION_GO_PREV_MSG_AREA) // Go to the previous message area
		{
			// The user is at the beginning of the current sub-board.
			if (allowChgMsgArea)
			{
				var goToPrevRetval = this.GoToPrevSubBoardForEnhReader(allowChgMsgArea);
				retObj.stoppedReading = goToPrevRetval.shouldStopReading;
				// If we're going to stop reading, then 
				if (retObj.stoppedReading)
					msgIndex = 0;
				else if (goToPrevRetval.changedMsgArea)
					msgIndex = goToPrevRetval.msgIndex;
			}
			// If the caller wants this method to return instead of going to the next
			// sub-board with messages, then do so.
			if (pReturnOnNextAreaNav)
				return retObj;
		}
		else if (readMsgRetObj.nextAction == ACTION_GO_NEXT_MSG_AREA) // Go to the next message area
		{
			if (allowChgMsgArea && !pReturnOnNextAreaNav)
			{
				var goToNextRetval = this.GoToNextSubBoardForEnhReader(allowChgMsgArea);
				retObj.stoppedReading = goToNextRetval.shouldStopReading;
				if (retObj.stoppedReading)
					msgIndex = 0;
				else if (goToNextRetval.changedMsgArea)
					msgIndex = goToNextRetval.msgIndex;
			}
			// If the caller wants this method to return instead of going to the next
			// sub-board with messages, then do so.
			if (pReturnOnNextAreaNav)
				return retObj;
		}
		else if (readMsgRetObj.nextAction == ACTION_DISPLAY_MSG_LIST) // Display message list
		{
			// If we need to return to the caller for this, then do so.
			if (pReturnOnMessageList)
			{
				retObj.messageListReturn = true;
				return retObj;
			}
			else
			{
				// If this.reverseListOrder is the string "ASK", the user will be prompted
				// on the last line of the screen for whether they want to list the
				// messages in reverse order.  So, erase the help line on the bottom of
				// the screen.
				if ((typeof(this.reverseListOrder) == "string") && (this.reverseListOrder.toUpperCase() == "ASK"))
				{
					if (this.scrollingReaderInterface && console.term_supports(USER_ANSI))
					{
						console.gotoxy(1, console.screen_rows);
						console.cleartoeol("\1n");
					}
				}

				// Call the ListMessages method - Don't change the sub-board, and
				// have it return if the user chooses a message to read.
				var listRetObj = this.ListMessages(null, true, pAllowChgArea);
				// If the user wants to quit, then stop the input loop.
				if (listRetObj.lastUserInput == "Q")
				{
					continueOn = false;
					retObj.stoppedReading = true;
				}
				// If the user chose a different message, then set the message index
				else if ((listRetObj.selectedMsgOffset > -1) && (listRetObj.selectedMsgOffset < this.NumMessages()))
					msgIndex = listRetObj.selectedMsgOffset;
			}
		}
		// Go to specific message & new message offset is valid: Read the new
		// message
		else if ((readMsgRetObj.nextAction == ACTION_GO_SPECIFIC_MSG) && (readMsgRetObj.newMsgOffset > -1))
		{
			// The user selected a different message in this sub-board
			msgIndex = readMsgRetObj.newMsgOffset;
		}

		// Save this iteration's next action for the "previous" next action for the next iteration
		previousNextAction = readMsgRetObj.nextAction;
	}

	return retObj;
}

// For the DigDistMsgReader class: Performs the message listing, given a
// sub-board code.
//
// Paramters:
//  pSubBoardCode: Optional - The internal sub-board code, or "mail"
//                 for personal email.
//  pReturnOnMsgSelect: Optional - A boolean to specify whether or not to
//                      return when a message is selected to read.  Defaults
//                      to false.
//  pAllowChgSubBoard: Optional - A boolean to specify whether or not to allow
//                     changing to another sub-board.  Defaults to true.
// Return value: An object containing the following properties:
//               lastUserInput: The user's last keypress/input
//               selectedMsgOffset: The index of the message selected to read,
//                                  if one was selected.  If none was selected,
//                                  this will be -1.
function DigDistMsgReader_ListMessages(pSubBoardCode, pReturnOnMsgSelect, pAllowChgSubBoard)
{
	var retObj = new Object();
	retObj.lastUserInput = "";
	retObj.selectedMsgOffset = -1;

	// If the passed-in sub-board code was different than what was set in the object before,
	// then open the new message sub-board.
	var previousSubBoardCode = this.subBoardCode;
	if (typeof(pSubBoardCode) == "string")
	{
		if (subBoardCodeIsValid(pSubBoardCode))
			this.setSubBoardCode(pSubBoardCode);
		else
		{
			console.print("\1n\1h\1yWarning: \1wThe Message Reader connot continue because an invalid");
			console.crlf();
			console.print("sub-board code was specified (" + pSubBoardCode + "). Please notify the sysop.");
			console.crlf();
			console.pause();
			return retObj;
		}
	}
	if (this.subBoardCode.length == 0)
	{
		console.print("\1n\1h\1yWarning: \1wThe Message Reader connot continue because no message\r\n");
		console.print("sub-board was specified. Please notify the sysop.\r\n\1p");
		return retObj;
	}
	if (previousSubBoardCode != this.subBoardCode)
	{
		this.msgbase = null;
		this.msgbase = new MsgBase(this.subBoardCode);
	}
	var openSucceeded = true;
	if (!this.msgbase.is_open)
		openSucceeded = this.msgbase.open();
	if (openSucceeded)
	{
		// If there are no messages to display in the current sub-board, then let the
		// user know and exit.
		if (this.NumMessages() == 0)
		{
			this.msgbase.close();
			this.msgbase = null;
			console.clear("\1n");
			console.center("\1n\1h\1yThere are no messages to display.\r\n\1p");
			return retObj;
		}
	}

	// Construct the traditional UI pause text and the line of help text for lightbar
	// mode.  This adds the delete and edit keys if the user is allowed to delete & edit
	// messages.
	this.SetMsgListPauseTextAndLightbarHelpLine();

	// If this.reverseListOrder is the string "ASK", prompt the user for whether
	// they want to list the messages in reverse order.
	if ((typeof(this.reverseListOrder) == "string") && (this.reverseListOrder.toUpperCase() == "ASK"))
	{
		if (numMessages(bbs.cursub_code) > 0)
			this.reverseListOrder = !console.noyes("\1n\1cList in reverse (newest on top)");
	}

	// List the messages using the lightbar or traditional interface, depending on
	// what this.msgListUseLightbarListInterface is set to.  The lightbar interface requires ANSI.
	if (this.msgListUseLightbarListInterface && canDoHighASCIIAndANSI())
		retObj = this.ListMessages_Lightbar(pReturnOnMsgSelect, pAllowChgSubBoard);
	else
		retObj = this.ListMessages_Traditional(pReturnOnMsgSelect, pAllowChgSubBoard);
	return retObj;
}
// For the DigDistMsgReader class: Performs the message listing, given a
// sub-board code.  This version uses a traditional user interface, prompting
// the user at the end of each page to continue, quit, or read a message.
// Note: This function requires this.msgbase to be valid and open.
//
// Parameters:
//  pReturnOnMsgSelect: Optional - A boolean to specify whether or not
//                      to return when a message is selected to read.
//  pAllowChgSubBoard: Optional - A boolean to specify whether or not to allow
//                     changing to another sub-board.  Defaults to true.
//
// Return value: An object containing the following properties:
//               lastUserInput: The user's last keypress/input
//               selectedMsgOffset: The index of the message selected to read,
//                                  if one was selected.  If none was selected,
//                                  this will be -1.
function DigDistMsgReader_ListMessages_Traditional(pReturnOnMsgSelect, pAllowChgSubBoard)
{
	var retObj = new Object();
	retObj.lastUserInput = "";
	retObj.selectedMsgOffset = -1;

	// Reset this.readAMessage and deniedReadingmessage to false, in case the
	// message listing has previously ended with them set to true.
	this.readAMessage = false;
	this.deniedReadingMessage = false;

	// this.msgbase must be valid before continuing.
	if ((typeof(this.msgbase) == "undefined") || (this.msgbase == null))
	{
		console.center("\1n\1h\1yError: \1wUnable to list messages because the sub-board is not open.\r\n\1p");
		return retObj;
	}
	else if (!this.msgbase.is_open)
	{
		console.center("\1n\1h\1yError: \1wUnable to list messages because the sub-board is not open.\r\n\1p");
		return retObj;
	}

	var allowChgSubBoard = (typeof(pAllowChgSubBoard) == "boolean" ? pAllowChgSubBoard : true);

	// this.tradMsgListNumLines stores the maximum number of lines to write.  It's the number
	// of rows on the user's screen - 3 to make room for the header line
	// at the top, the question line at the bottom, and 1 extra line at
	// the bottom of the screen so that displaying carriage returns
	// doesn't mess up the position of the header lines at the top.
	this.tradMsgListNumLines = console.screen_rows-3;
	var nListStartLine = 2; // The first line number on the screen for the message list
	// If we will be displaying the message group and sub-board in the
	// header at the top of the screen (an additional 2 lines), then
	// update this.tradMsgListNumLines and nListStartLine to account for this.
	if (this.displayBoardInfoInHeader)
	{
		this.tradMsgListNumLines -= 2;
		nListStartLine += 2;
	}

	// If the user's terminal doesn't support ANSI, then re-calculate
	// this.tradMsgListNumLines - we won't be keeping the headers at the top of the
	// screen.
	if (!canDoHighASCIIAndANSI()) // Could also be !console.term_supports(USER_ANSI)
		this.tradMsgListNumLines = console.screen_rows - 2;

	// Clear the screen and write the header at the top
	console.clear("\1n");
	this.WriteMsgListScreenTopHeader();

	// If this.tradListTopMsgIdx hasn't been set yet, then get the index of the user's
	// last read message and figure out which page it's on and set the top message
	// index accordingly.
	if (this.tradListTopMsgIdx == -1)
		this.SetUpTraditionalMsgListVars();
	// Write the message list
	var continueOn = true;
	var retvalObj = null;
	var curpos = null; // Current character position
	var lastScreen = false;
	while (continueOn)
	{
		// Go to the top and write the current page of message information,
		// then update curpos.
		console.gotoxy(1, nListStartLine);
		lastScreen = this.ListScreenfulOfMessages(this.tradListTopMsgIdx, this.tradMsgListNumLines);
		curpos = console.getxy();
		clearToEOS(curpos.y);
		console.gotoxy(curpos);
		// Prompt the user whether or not to continue or to read a message
		// (by message number).
		if (this.reverseListOrder)
			retvalObj = this.PromptContinueOrReadMsg((this.tradListTopMsgIdx == this.NumMessages()-1), lastScreen, pReturnOnMsgSelect, allowChgSubBoard);
		else
			retvalObj = this.PromptContinueOrReadMsg((this.tradListTopMsgIdx == 0), lastScreen, pReturnOnMsgSelect, allowChgSubBoard);
		retObj.lastUserInput = retvalObj.userInput;
		retObj.selectedMsgOffset = retvalObj.selectedMsgOffset;

		continueOn = retvalObj.continueOn;
		// TODO: Update this to use PageUp & PageDown keys for paging?  It would
		// require updating PromptContinueOrReadMsg(), which would be non-trivial
		// because that method uses console.getkeys() with a list of allowed keys
		// and a message number limit.
		if (continueOn)
		{
			// If the user chose to go to the previous page of listings,
			// then subtract the appropriate number of messages from
			// this.tradListTopMsgIdx in order to do so.
			if (retvalObj.userInput == "P")
			{
				if (this.reverseListOrder)
				{
					this.tradListTopMsgIdx += this.tradMsgListNumLines;
					// If we go past the beginning, then we need to reset
					// msgNum so we'll be at the beginning of the list.
					var totalNumMessages = this.NumMessages();
					if (this.tradListTopMsgIdx >= totalNumMessages)
						this.tradListTopMsgIdx = totalNumMessages - 1;
				}
				else
				{
					this.tradListTopMsgIdx -= this.tradMsgListNumLines;
					// If we go past the beginning, then we need to reset
					// msgNum so we'll be at the beginning of the list.
					if (this.tradListTopMsgIdx < 0)
						this.tradListTopMsgIdx = 0;
				}
			}
			// If the user chose to go to the next page, update
			// this.tradListTopMsgIdx appropriately.
			else if (retvalObj.userInput == "N")
			{
				if (this.reverseListOrder)
					this.tradListTopMsgIdx -= this.tradMsgListNumLines;
				else
					this.tradListTopMsgIdx += this.tradMsgListNumLines;
			}
			// First page
			else if (retvalObj.userInput == "F")
			{
				if (this.reverseListOrder)
					this.tradListTopMsgIdx = this.NumMessages() - 1;
				else
					this.tradListTopMsgIdx = 0;
			}
			// Last page
			else if (retvalObj.userInput == "L")
			{
				if (this.reverseListOrder)
				{
					this.tradListTopMsgIdx = (this.NumMessages() % this.tradMsgListNumLines) - 1;
					// If this.tradListTopMsgIdx is now invalid (below 0), then adjust it
					// to properly display the last page of messages.
					if (this.tradListTopMsgIdx < 0)
						this.tradListTopMsgIdx = this.tradMsgListNumLines - 1;
				}
				else
				{
					var totalNumMessages = this.NumMessages();
					this.tradListTopMsgIdx = totalNumMessages - (totalNumMessages % this.tradMsgListNumLines);
					if (this.tradListTopMsgIdx >= totalNumMessages)
						this.tradListTopMsgIdx = totalNumMessages - this.tradMsgListNumLines;
				}
			}
			// D: Delete a message
			else if (retvalObj.userInput == "D")
			{
				if (this.CanDelete() || this.CanDeleteLastMsg())
				{
					var msgNum = this.PromptForMsgNum({ x: curpos.x, y: curpos.y+1 }, this.text.deleteMsgNumPromptText, false, ERROR_PAUSE_WAIT_MS, false);
					// If the user enters a valid message number, then call the
					// DeleteMessage() method, which will prompt the user for
					// confirmation and delete the message if confirmed.
					if (msgNum > 0)
						this.PromptAndDeleteMessage(msgNum-1);

					// Refresh the top header on the screen for continuing to list
					// messages.
					console.clear("\1n");
					this.WriteMsgListScreenTopHeader();
				}
			}
			// E: Edit a message
			else if (retvalObj.userInput == "E")
			{
				if (this.CanEdit())
				{
					var msgNum = this.PromptForMsgNum({ x: curpos.x, y: curpos.y+1 }, this.text.editMsgNumPromptText, false, ERROR_PAUSE_WAIT_MS, false);
					// If the user entered a valid message number, then let the
					// user edit the message.
					if (msgNum > 0)
						var returnObj = this.EditExistingMsg(msgNum-1);

					// Refresh the top header on the screen for continuing to list
					// messages.
					console.clear("\1n");
					this.WriteMsgListScreenTopHeader();
				}
			}
			// G: Go to a specific message by # (place that message on the top)
			else if (retvalObj.userInput == "G")
			{
				var msgNum = this.PromptForMsgNum(curpos, "\1n" + this.text.goToMsgNumPromptText, false, ERROR_PAUSE_WAIT_MS, false);
				if (msgNum > 0)
					this.tradListTopMsgIdx = msgNum - 1;

				// Refresh the top header on the screen for continuing to list
				// messages.
				console.clear("\1n");
				this.WriteMsgListScreenTopHeader();
			}
			// ?: Display help
			else if (retvalObj.userInput == "?")
			{
				console.clear("\1n");
				this.DisplayMsgListHelp(allowChgSubBoard, true);
				console.clear("\1n");
				this.WriteMsgListScreenTopHeader();
			}
			// C: Change to another message area (sub-board)
			else if (retvalObj.userInput == "C")
			{
				if (allowChgSubBoard && (this.subBoardCode != "mail"))
				{
					// Store the current sub-board code so we can see if it changed
					var oldSubCode = bbs.cursub_code;
					// Let the user choose another message area.  If they chose
					// a different message area, then set up the message base
					// object accordingly.
					this.SelectMsgArea();
					if (bbs.cursub_code != oldSubCode)
					{
						var chgSubRetval = this.ChangeSubBoard(bbs.cursub_code);
						continueOn = chgSubRetval.succeeded;
					}
					// Update the traditional list variables and refresh the screen
					if (continueOn)
					{
						this.SetUpTraditionalMsgListVars();
						console.clear("\1n");
						this.WriteMsgListScreenTopHeader();
					}
				}
			}
			// S: Select message(s)
			else if (retvalObj.userInput == "S")
			{
				// Input the message number list from the user
				console.print("\1n\1cNumber(s) of message(s) to select, (\1hA\1n\1c=All, \1hN\1n\1c=None, \1hENTER\1n\1c=cancel)\1g\1h: \1c");
				var userNumberList = console.getstr(128, K_UPPER);
				// If the user entered A or N, then select/un-select all messages.
				// Otherwise, select only the messages that the user entered.
				if ((userNumberList == "A") || (userNumberList == "N"))
				{
					var messageSelectToggle = (userNumberList == "A");
					var totalNumMessages = this.NumMessages();
					for (var msgIdx = 0; msgIdx < totalNumMessages; ++msgIdx)
						this.ToggleSelectedMessage(this.subBoardCode, msgIdx, messageSelectToggle);
				}
				else
				{
					if (userNumberList.length > 0)
					{
						var numArray = parseNumberList(userNumberList);
						for (var numIdx = 0; numIdx < numArray.length; ++numIdx)
							this.ToggleSelectedMessage(this.subBoardCode, numArray[numIdx]-1);
					}
				}
				// Refresh the top header on the screen for continuing to list
				// messages.
				console.clear("\1n");
				this.WriteMsgListScreenTopHeader();
			}
			// Ctrl-D: Batch delete (for selected messages)
			else if (retvalObj.userInput == CTRL_D)
			{
				console.print("\1n");
				console.crlf();
				if (this.NumSelectedMessages() > 0)
				{
					// The PromptAndDeleteSelectedMessages() method will prompt the user for confirmation
					// to delete the message and then delete it if confirmed.
					this.PromptAndDeleteSelectedMessages();

					// In case all messages were deleted, if that's the case, show
					// an appropriate message and don't continue listing messages.
					//if (this.NumMessages(true) == 0)
					if (!this.NonDeletedMessagesExist())
					{
						continueOn = false;
						// Note: The following doesn't seem to be necessary, since
						// the ReadOrListSubBoard() method will show a message saying
						// there are no messages to read and then will quit out.
						
						//this.msgbase.close();
						//this.msgbase = null;
						//console.clear("\1n");
						//console.center("\1n\1h\1yThere are no messages to display.");
						//console.crlf();
						//console.pause();
						
					}
					else
					{
						// There are still messages to list, so refresh the top
						// header on the screen for continuing to list messages.
						console.clear("\1n");
						this.WriteMsgListScreenTopHeader();
					}
				}
				else
				{
					// There are no selected messages
					console.print("\1n\1h\1yThere are no selected messages.");
					mswait(ERROR_PAUSE_WAIT_MS);
					// Refresh the top header on the screen for continuing to list messages.
					console.clear("\1n");
					this.WriteMsgListScreenTopHeader();
				}
			}
			else
			{
				// If pReturnOnMsgSelect is true and the user selected a message to
				// read, then exit out of this input loop so we can return from
				// this method - The calling method will call the enhanced reader
				// method.
				if (pReturnOnMsgSelect && (retObj.selectedMsgOffset >= 0))
					continueOn = false;
			}

			if (!pReturnOnMsgSelect)
			{
				// If the user chose to read a message or denied confirmation, then:
				// - Re-draw the column headers at the top of the screen.
				// - Subtract this.tradMsgListNumLines from msgNum so that this script displays
				//   the same page where the user left off.
				if (this.readAMessage || this.deniedReadingMessage)
				{
					if (canDoHighASCIIAndANSI()) // Could also be console.term_supports(USER_ANSI)
						this.WriteMsgListScreenTopHeader();
				}
				this.readAMessage = false;
				this.deniedReadingMessage = false;

				// If the user's terminal doesn't support ANSI, then adjust
				// this.tradMsgListNumLines to 1 less than the number of screen rows, because
				// after the first page, we no longer need to display the message
				// list header line.
				if (!canDoHighASCIIAndANSI()) // Could also be !console.term_supports(USER_ANSI)
					this.tradMsgListNumLines = console.screen_rows - 1;
			}
		}
	}

	return retObj;
}
// For the DigDistMsgReader class: Performs the message listing, given a
// sub-board code.  This verison uses a lightbar interface for message
// navigation.  Note: This function requires this.msgbase to be valid and
// open.
//
// Parameters:
//  pReturnOnMsgSelect: Optional - A boolean to specify whether or not
//                      to return when a message is selected to read.
//  pAllowChgSubBoard: Optional - A boolean to specify whether or not to allow
//                     changing to another sub-board.  Defaults to true.
//
// Return value: An object containing the following properties:
//               lastUserInput: The user's last keypress/input
//               selectedMsgOffset: The index of the message selected to read,
//                                  if one was selected.  If none was selected,
//                                  this will be -1.
function DigDistMsgReader_ListMessages_Lightbar(pReturnOnMsgSelect, pAllowChgSubBoard)
{
	var retObj = new Object();
	retObj.lastUserInput = "";
	retObj.selectedMsgOffset = -1;

	// This method is only supported if the user's terminal supports
	// ANSI.
	if (!canDoHighASCIIAndANSI()) // Could also be !console.term_supports(USER_ANSI)
	{
		console.print("\r\n\1h\1ySorry, an ANSI terminal is required for this operation.\1n\1w\r\n");
		console.pause();
		return retObj;
	}

	// Reset this.readAMessage and deniedReadingMessage to false, in case the
	// message listing has previously ended with them set to true.
	this.readAMessage = false;
	this.deniedReadingMessage = false;

	// this.msgbase must be valid before continuing.
	if ((typeof(this.msgbase) == "undefined") || (this.msgbase == null))
	{
		console.center("\1n\1h\1yError: \1wUnable to list messages because the sub-board is not open.\r\n\1p");
		return retObj;
	}
	else if (!this.msgbase.is_open)
	{
		console.center("\1n\1h\1yError: \1wUnable to list messages because the sub-board is not open.\r\n\1p");
		return retObj;
	}

	var allowChgSubBoard = (typeof(pAllowChgSubBoard) == "boolean" ? pAllowChgSubBoard : true);

	// This function will be used for displaying the help line at
	// the bottom of the screen.
	function DisplayHelpLine(pHelpLineText)
	{
		console.gotoxy(1, console.screen_rows);
		console.print(pHelpLineText);
		console.cleartoeol("\1n");
	}

	// Clear the screen and write the header at the top
	console.clear("\1n");
	this.WriteMsgListScreenTopHeader();
	DisplayHelpLine(this.msgListLightbarModeHelpLine);

	// If the lightbar message list index & cursor position variables haven't been
	// set yet, then set them.
	if ((this.lightbarListTopMsgIdx == -1) || (this.lightbarListSelectedMsgIdx == -1) ||
	    (this.lightbarListCurPos == null))
	{
		this.SetUpLightbarMsgListVars();
	}

	// List a screenful of message headers
	console.gotoxy(1, this.lightbarMsgListStartScreenRow);
	var lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
	// Move the cursor to where it needs to be
	console.gotoxy(this.lightbarListCurPos);
	// User input loop
	var bottomMsgIndex = 0;
	var userInput = "";
	var msgHeader = null;
	var continueOn = true;
	while (continueOn)
	{
		bbs.command_str = ""; // To prevent weirdness

		retObj.selectedMsgOffset = -1;

		// Calculate the message number (0-based) of the message
		// appearing on the bottom of the screen.
		if (this.reverseListOrder)
		{
			bottomMsgIndex = this.lightbarListTopMsgIdx - this.lightbarMsgListNumLines + 1;
			if (bottomMsgIndex < 0)
				bottomMsgIndex = 0;
		}
		else
		{
			var totalNumMessages = this.NumMessages();
			bottomMsgIndex = this.lightbarListTopMsgIdx + this.lightbarMsgListNumLines - 1;
			if (bottomMsgIndex >= totalNumMessages)
				bottomMsgIndex = totalNumMessages - 1;
		}

		// Write the current message information with highlighting colors
		msgHeader = this.GetMsgHdrByIdx(this.lightbarListSelectedMsgIdx);
		this.PrintMessageInfo(msgHeader, true, this.lightbarListSelectedMsgIdx+1);
		console.gotoxy(this.lightbarListCurPos); // Make sure the cursor is still in the right place

		// Get a key from the user (upper-case) and take appropriate action.
		userInput = getKeyWithESCChars(K_UPPER|K_NOCRLF|K_NOECHO|K_NOSPIN);
		retObj.lastUserInput = userInput;
		// Q: Quit
		if (userInput == "Q")
		{
			// Quit
			continueOn = false;
			break;
		}
		// ?: Show help
		else if (userInput == "?")
		{
			// Display help
			console.clear("\1n");
			this.DisplayMsgListHelp(allowChgSubBoard, true);

			// Re-draw the message list on the screen
			console.clear("\1n");
			this.WriteMsgListScreenTopHeader();
			DisplayHelpLine(this.msgListLightbarModeHelpLine);
			console.gotoxy(1, this.lightbarMsgListStartScreenRow);
			lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
			console.gotoxy(this.lightbarListCurPos); // Put the cursor back where it should be
		}
		// Up arrow: Highlight the previous message
		else if (userInput == KEY_UP)
		{
			// Make sure this.lightbarListSelectedMsgIdx is within bounds before moving down.
			if (this.reverseListOrder)
			{
				if (this.lightbarListSelectedMsgIdx >= this.NumMessages() - 1)
					continue;
			}
			else
			{
				if (this.lightbarListSelectedMsgIdx <= 0)
					continue;
			}

			// Print the current message information with regular colors
			this.PrintMessageInfo(msgHeader, false, this.lightbarListSelectedMsgIdx+1);

			if (this.reverseListOrder)
				++this.lightbarListSelectedMsgIdx;
			else
				--this.lightbarListSelectedMsgIdx;

			// If the current screen row is above the first line allowed, then
			// move the cursor up one row.
			if (this.lightbarListCurPos.y > this.lightbarMsgListStartScreenRow)
			{
				console.gotoxy(1, this.lightbarListCurPos.y-1);
				this.lightbarListCurPos.x = 1;
				--this.lightbarListCurPos.y;
			}
			else
			{
				// Go onto the previous page, with the cursor highlighting
				// the last message on the page.
				if (this.reverseListOrder)
					this.lightbarListTopMsgIdx = this.lightbarListSelectedMsgIdx + this.lightbarMsgListNumLines - 1;
				else
					this.lightbarListTopMsgIdx = this.lightbarListSelectedMsgIdx - this.lightbarMsgListNumLines + 1;

				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				console.gotoxy(1, this.lightbarMsgListStartScreenRow+this.lightbarMsgListNumLines-1);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow+this.lightbarMsgListNumLines-1;
			}
		}
		// Down arrow: Highlight the next message
		else if (userInput == KEY_DOWN)
		{
			// Make sure this.lightbarListSelectedMsgIdx is within bounds before moving down.
			if (this.reverseListOrder)
			{
				if (this.lightbarListSelectedMsgIdx <= 0)
					continue;
			}
			else
			{
				if (this.lightbarListSelectedMsgIdx >= this.NumMessages() - 1)
					continue;
			}

			// Print the current message information with regular colors
			this.PrintMessageInfo(msgHeader, false, this.lightbarListSelectedMsgIdx+1);

			if (this.reverseListOrder)
				--this.lightbarListSelectedMsgIdx;
			else
				++this.lightbarListSelectedMsgIdx;

			// If the current screen row is below the last line allowed, then
			// move the cursor down one row.
			if (this.lightbarListCurPos.y < this.lightbarMsgListStartScreenRow+this.lightbarMsgListNumLines-1)
			{
				console.gotoxy(1, this.lightbarListCurPos.y+1);
				this.lightbarListCurPos.x = 1;
				++this.lightbarListCurPos.y;
			}
			else
			{
				// Go onto the next page, with the cursor highlighting
				// the first message on the page.
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListTopMsgIdx = this.lightbarListSelectedMsgIdx;
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				// If we were on the last page, then clear the screen from
				// the current line to the end of the screen.
				if (lastPage)
				{
					this.lightbarListCurPos = console.getxy();
					clearToEOS(this.lightbarListCurPos.y);
					// Make sure the help line is still there
					DisplayHelpLine(this.msgListLightbarModeHelpLine);
				}

				// Move the cursor to the top of the list
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
			}
		}
		// HOME key: Go to the first message on the screen
		else if (userInput == KEY_HOME)
		{
			// Print the current message information with regular colors
			this.PrintMessageInfo(msgHeader, false, this.lightbarListSelectedMsgIdx+1);
			// Go to the first message of the current page
			if (this.reverseListOrder)
				this.lightbarListSelectedMsgIdx += (this.lightbarListCurPos.y - this.lightbarMsgListStartScreenRow);
			else
				this.lightbarListSelectedMsgIdx -= (this.lightbarListCurPos.y - this.lightbarMsgListStartScreenRow);
			// Move the cursor to the first message line
			console.gotoxy(1, this.lightbarMsgListStartScreenRow);
			this.lightbarListCurPos.x = 1;
			this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
		}
		// END key: Go to the last message on the screen
		else if (userInput == KEY_END)
		{
			// Print the current message information with regular colors
			this.PrintMessageInfo(msgHeader, false, this.lightbarListSelectedMsgIdx+1);
			// Update the selected message #
			this.lightbarListSelectedMsgIdx = bottomMsgIndex;
			// Go to the last message of the current page
			if (this.reverseListOrder)
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow + this.lightbarListTopMsgIdx - bottomMsgIndex;
			else
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow + bottomMsgIndex - this.lightbarListTopMsgIdx;
			console.gotoxy(this.lightbarListCurPos);
		}
		// Enter key: Select a message to read
		else if (userInput == KEY_ENTER)
		{
			var originalCurpos = console.getxy();

			// Allow the user to read the current message.
			var readMsg = true;
			if (this.promptToReadMessage)
			{
				// Confirm with the user whether to read the message.
				var sReadMsgConfirmText = this.colors["readMsgConfirmColor"]
				                        + "Read message "
				                        + this.colors["readMsgConfirmNumberColor"]
				                        + +(msgHeader.offset+1)
				                        + this.colors["readMsgConfirmColor"]
				                        + ": Are you sure";
				console.gotoxy(1, console.screen_rows);
				console.print("\1n");
				console.clearline();
				readMsg = console.yesno(sReadMsgConfirmText);
			}
			var repliedToMessage = false;
			if (readMsg)
			{
				// If there is a search specified and the search result objects are
				// set up for the current sub-board, then the selected message offset
				// should be the search result array index.  Otherwise (if not
				// searching), the message offset should be the actual message offset
				// in the message base.
				if (this.SearchingAndResultObjsDefinedForCurSub())
					retObj.selectedMsgOffset = this.lightbarListSelectedMsgIdx;
				else
					retObj.selectedMsgOffset = msgHeader.offset;
				if (pReturnOnMsgSelect)
					return retObj;
				else
				{
					this.readAMessage = true;
					console.clear("\1n");
					var readRetObj = null;
					if (this.SearchingAndResultObjsDefinedForCurSub())
						readRetObj = this.ReadMessage(this.lightbarListSelectedMsgIdx);
					else
						readRetObj = this.ReadMessage(msgHeader.offset);
					repliedToMessage = readRetObj.userReplied;
				}
			}
			else
				this.deniedReadingMessage = true;

			// Ask the user if  they want to continue reading messages
			if (this.promptToContinueListingMessages)
			{
				continueOn = console.yesno(this.colors["afterReadMsg_ListMorePromptColor"] +
				"Continue listing messages");
			}
			// If the user chose to continue reading messages, then refresh
			// the screen.  Even if the user chooses not to read the message,
			// the screen needs to be re-drawn so it appears properly.
			if (continueOn)
			{
				console.clear("\1n");
				this.WriteMsgListScreenTopHeader();
				DisplayHelpLine(this.msgListLightbarModeHelpLine);
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				// If we're dispaying in reverse order and the user replied
				// to the message, then we'll have to re-arrange the screen
				// a bit to make way for the new message that will appear
				// in the list.
				if (this.reverseListOrder && repliedToMessage)
				{
					// Make way for the new message, which will appear at the
					// top.
					++this.lightbarListTopMsgIdx;
					// If the cursor is below the bottommost line displaying
					// messages, then advance the cursor down one position.
					// Otherwise, increment this.lightbarListSelectedMsgIdx (since a new message
					// will appear at the top, the previous selected message
					// will be pushed to the next page).
					if (this.lightbarListCurPos.y < console.screen_rows - 1)
					{
						++originalCurpos.y;
						++this.lightbarListCurPos.y;
					}
					else
						++this.lightbarListSelectedMsgIdx;
				}
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				console.gotoxy(originalCurpos); // Put the cursor back where it should be
			}
		}
		// PageDown: Next page
		else if (userInput == KEY_PAGE_DOWN)
		{
			// Next page
			if (!lastPage)
			{
				if (this.reverseListOrder)
					this.lightbarListTopMsgIdx -= this.lightbarMsgListNumLines;
				else
					this.lightbarListTopMsgIdx += this.lightbarMsgListNumLines;
				this.lightbarListSelectedMsgIdx = this.lightbarListTopMsgIdx;
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);

				// If we were on the last page, then clear the screen from
				// the current line to the end of the screen.
				if (lastPage)
				{
					this.lightbarListCurPos = console.getxy();
					clearToEOS(this.lightbarListCurPos.y);
					// Make sure the help line is still there
					DisplayHelpLine(this.msgListLightbarModeHelpLine);
				}

				// Move the cursor back to the first message info line
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
			}
			else {
				// The user is on the last page - Go to the last message on the page.
				if (this.lightbarListSelectedMsgIdx != bottomMsgIndex)
				{
					// Print the current message information with regular colors
					this.PrintMessageInfo(msgHeader, false, this.lightbarListSelectedMsgIdx+1);
					// Update the selected message #
					this.lightbarListSelectedMsgIdx = bottomMsgIndex;
					this.lightbarListCurPos.x = 1;
					if (this.reverseListOrder)
						this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow + this.lightbarListTopMsgIdx - bottomMsgIndex;
					else
						this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow + bottomMsgIndex - this.lightbarListTopMsgIdx;
					console.gotoxy(this.lightbarListCurPos);
				}
			}
		}
		// PageUp: Previous page
		else if (userInput == KEY_PAGE_UP)
		{
			var canGoToPrevious = false;
			if (this.reverseListOrder)
				canGoToPrevious = (this.lightbarListTopMsgIdx < this.NumMessages() - 1);
			else
				canGoToPrevious = (this.lightbarListTopMsgIdx > 0);

			if (canGoToPrevious)
			{
				if (this.reverseListOrder)
					this.lightbarListTopMsgIdx += this.lightbarMsgListNumLines;
				else
					this.lightbarListTopMsgIdx -= this.lightbarMsgListNumLines;
				this.lightbarListSelectedMsgIdx = this.lightbarListTopMsgIdx;
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
			}
			else
			{
				// The user is on the first page - Go to the first message on the page.
				if (this.lightbarListSelectedMsgIdx != 0)
				{
					// Print the current message information with regular colors
					this.PrintMessageInfo(msgHeader, false, this.lightbarListSelectedMsgIdx+1);
					// Go to the first message of the current page
					if (this.reverseListOrder)
						this.lightbarListSelectedMsgIdx += (this.lightbarListCurPos.y - this.lightbarMsgListStartScreenRow);
					else
						this.lightbarListSelectedMsgIdx -= (this.lightbarListCurPos.y - this.lightbarMsgListStartScreenRow);
					// Move the cursor to the first message line
					console.gotoxy(1, this.lightbarMsgListStartScreenRow);
					this.lightbarListCurPos.x = 1;
					this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
				}
			}
		}
		// F: First page
		else if (userInput == "F")
		{
			var canGoToFirst = false;
			if (this.reverseListOrder)
				canGoToFirst = (this.lightbarListTopMsgIdx < this.NumMessages() - 1);
			else
				canGoToFirst = (this.lightbarListTopMsgIdx > 0);

			if (canGoToFirst)
			{
				if (this.reverseListOrder)
					this.lightbarListTopMsgIdx = this.NumMessages() - 1;
				else
					this.lightbarListTopMsgIdx = 0;
				this.lightbarListSelectedMsgIdx = this.lightbarListTopMsgIdx;
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
			}
		}
		// L: Last page
		else if (userInput == "L")
		{
			if (!lastPage)
			{
				// Set the top message index.  If this.lightbarListTopMsgIdx is beyond the last
				// message in the sub-board, then move back a full page of messages.
				if (this.reverseListOrder)
				{
					this.lightbarListTopMsgIdx = (this.NumMessages() % this.lightbarMsgListNumLines) - 1;
					// If this.lightbarListTopMsgIdx is now invalid (below 0), then adjust it
					// to properly display the last page of messages.
					if (this.lightbarListTopMsgIdx < 0)
						this.lightbarListTopMsgIdx = this.lightbarMsgListNumLines - 1;
				}
				else
				{
					var totalNumMessages = this.NumMessages();
					this.lightbarListTopMsgIdx = totalNumMessages - (totalNumMessages % this.lightbarMsgListNumLines);
					if (this.lightbarListTopMsgIdx >= totalNumMessages)
						this.lightbarListTopMsgIdx = totalNumMessages - this.lightbarMsgListNumLines;
				}

				this.lightbarListSelectedMsgIdx = this.lightbarListTopMsgIdx;
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				// If we were on the last page, then clear the screen from
				// the current line to the end of the screen.
				if (lastPage)
				{
					this.lightbarListCurPos = console.getxy();
					clearToEOS(this.lightbarListCurPos.y);
					// Make sure the help line is still there
					DisplayHelpLine(this.msgListLightbarModeHelpLine);
				}

				// Move the cursor back to the first message info line
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				this.lightbarListCurPos.x = 1;
				this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
			}
		}
		// Numeric digit: The start of a number of a message to read
		else if (userInput.match(/[0-9]/))
		{
			var originalCurpos = console.getxy();

			// Put the user's input back in the input buffer to
			// be used for getting the rest of the message number.
			console.ungetstr(userInput);
			// Move the cursor to the bottom of the screen and
			// prompt the user for the message number.
			console.gotoxy(1, console.screen_rows);
			userInput = this.PromptForMsgNum({ x: 1, y: console.screen_rows }, this.text.readMsgNumPromptText, true, ERROR_PAUSE_WAIT_MS, false);
			if (userInput > 0)
			{
				// Confirm with the user whether to read the message
				var readMsg = true;
				if (this.promptToReadMessage)
				{
					var sReadMsgConfirmText = this.colors["readMsgConfirmColor"]
					                        + "Read message "
					                        + this.colors["readMsgConfirmNumberColor"]
					                        + userInput + this.colors["readMsgConfirmColor"]
					                        + ": Are you sure";
					readMsg = console.yesno(sReadMsgConfirmText);
				}
				if (readMsg)
				{
					// Update the message list screen variables
					this.CalcMsgListScreenIdxVarsFromMsgNum(+userInput);
					// Let the user read the message
					retObj.selectedMsgOffset = userInput - 1;
					if (pReturnOnMsgSelect)
						return retObj;
					else
					{
						this.readAMessage = true;
						if (this.SearchingAndResultObjsDefinedForCurSub())
							this.ReadMessage(this.lightbarListSelectedMsgIdx);
						else
							this.ReadMessage(userInput-1);
					}
				}
				else
					this.deniedReadingMessage = true;

				// Prompt the user whether or not to continue listing
				// messages.
				if (this.promptToContinueListingMessages)
				{
					continueOn = console.yesno(this.colors["afterReadMsg_ListMorePromptColor"] +
					                           "Continue listing messages");
				}
			}

			// If the user chose to continue listing messages, then re-draw
			// the screen.
			if (continueOn)
			{
				console.clear("\1n");
				this.WriteMsgListScreenTopHeader();
				DisplayHelpLine(this.msgListLightbarModeHelpLine);
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				console.gotoxy(originalCurpos); // Put the cursor back where it should be
			}
		}
		// DEL key: Delete a message
		else if (userInput == KEY_DEL)
		{
			if (this.CanDelete() || this.CanDeleteLastMsg())
			{
				var originalCurpos = console.getxy();

				console.gotoxy(1, console.screen_rows);
				console.print("\1n");
				console.clearline();

				// The PromptAndDeleteMessage() method will prompt the user for confirmation
				// to delete the message and then delete it if confirmed.
				this.PromptAndDeleteMessage(this.lightbarListSelectedMsgIdx, { x: 1, y: console.screen_rows});
				
				// In case all messages were deleted, if that's the case, show
				// an appropriate message and don't continue listing messages.
				//if (this.NumMessages(true) == 0)
				if (!this.NonDeletedMessagesExist())
				{
					continueOn = false;
					// Note: The following doesn't seem to be necessary, since
					// the ReadOrListSubBoard() method will show a message saying
					// there are no messages to read and then will quit out.
					/*
					this.msgbase.close();
					this.msgbase = null;
					console.clear("\1n");
					console.center("\1n\1h\1yThere are no messages to display.");
					console.crlf();
					console.pause();
					*/
				}
				else
				{
					// There are still some messages to show, so refresh the screen.
					// Refresh the screen
					console.clear("\1n");
					this.WriteMsgListScreenTopHeader();
					DisplayHelpLine(this.msgListLightbarModeHelpLine);
					console.gotoxy(1, this.lightbarMsgListStartScreenRow);
					lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
					console.gotoxy(originalCurpos); // Put the cursor back where it should be
				}
			}
		}
		// E: Edit a message
		else if (userInput == "E")
		{
			if (this.CanEdit())
			{
				var originalCurpos = console.getxy();

				// Ask the user if they really want to edit the message
				console.gotoxy(1, console.screen_rows);
				console.print("\1n");
				console.clearline();
				// Let the user edit the message
				//var returnObj = this.EditExistingMsg(msgHeader.offset);
				var returnObj = this.EditExistingMsg(this.lightbarListSelectedMsgIdx);
				// Refresh the screen
				console.clear("\1n");
				this.WriteMsgListScreenTopHeader();
				DisplayHelpLine(this.msgListLightbarModeHelpLine);
				console.gotoxy(1, this.lightbarMsgListStartScreenRow);
				lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
				console.gotoxy(originalCurpos); // Put the cursor back where it should be
			}
		}
		// G: Go to a specific message by # (highlight or place that message on the top)
		else if (userInput == "G")
		{
			var originalCurpos = console.getxy();

			// Move the cursor to the bottom of the screen and
			// prompt the user for a message number.
			console.gotoxy(1, console.screen_rows);
			userInput = this.PromptForMsgNum({ x: 1, y: console.screen_rows }, "\n" + this.text.goToMsgNumPromptText, true, ERROR_PAUSE_WAIT_MS, false);
			if (userInput > 0)
			{
				// Make sure the message number is for a valid message (i.e., it
				// could be an invalid message number if there is a search, where
				// not all message numbers are consecutive).
				if (this.GetMsgHdrByMsgNum(userInput) != null)
				{
					// If the message is on the current page, then just go to and
					// highlight it.  Otherwise, set the user's selected message on the
					// top of the page.  We also have to make sure that this.lightbarListCurPos.y and
					// originalCurpos.y are set correctly.  Also, account for search
					// results if there are any (we'll need to have the correct array
					// index for the search results).
					var chosenMsgIndex = userInput - 1;
					if ((chosenMsgIndex <= bottomMsgIndex) && (chosenMsgIndex >= this.lightbarListTopMsgIdx))
					{
						this.lightbarListSelectedMsgIdx = chosenMsgIndex;
						originalCurpos.y = this.lightbarListCurPos.y = this.lightbarListSelectedMsgIdx - this.lightbarListTopMsgIdx + this.lightbarMsgListStartScreenRow;
					}
					else
					{
						this.lightbarListTopMsgIdx = this.lightbarListSelectedMsgIdx = chosenMsgIndex;
						originalCurpos.y = this.lightbarListCurPos.y = this.lightbarMsgListStartScreenRow;
					}
				}
				else
				{
					// The user entered an invalid message number
					console.print("\1n" + this.text.invalidMsgNumText.replace("%d", userInput) + "\1n");
					console.inkey(K_NONE, ERROR_PAUSE_WAIT_MS);
				}
			}

			// Clear & re-draw the screen, to fix any possible alignment problems
			// caused by newline output after the user inputs their choice.
			console.clear("\1n");
			this.WriteMsgListScreenTopHeader();
			DisplayHelpLine(this.msgListLightbarModeHelpLine);
			console.gotoxy(1, this.lightbarMsgListStartScreenRow);
			lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
			console.gotoxy(originalCurpos); // Put the cursor back where it should be
		}
		// C: Change to another message area (sub-board)
		else if (userInput == "C")
		{
			if (allowChgSubBoard && (this.subBoardCode != "mail"))
			{
				// Store the current sub-board code so we can see if it changed
				var oldSubCode = bbs.cursub_code;
				// Let the user choose another message area.  If they chose
				// a different message area, then set up the message base
				// object accordingly.
				this.SelectMsgArea();
				if (bbs.cursub_code != oldSubCode)
				{
					var chgSubRetval = this.ChangeSubBoard(bbs.cursub_code);
					continueOn = chgSubRetval.succeeded;
				}
				// Update the lightbar list variables and refresh the screen
				if (continueOn)
				{
					this.SetUpLightbarMsgListVars();
					console.clear("\1n");
					this.WriteMsgListScreenTopHeader();
					DisplayHelpLine(this.msgListLightbarModeHelpLine);
					// List a screenful of message headers
					console.gotoxy(1, this.lightbarMsgListStartScreenRow);
					var lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
					// Move the cursor to where it needs to be
					console.gotoxy(this.lightbarListCurPos);
				}
			}
		}
		// Spacebar: Select a message for batch operations (such as batch
		// delete, etc.)
		else if (userInput == " ")
			this.ToggleSelectedMessage(this.subBoardCode, this.lightbarListSelectedMsgIdx);
		// Ctrl-A: Select/de-select all messages
		else if (userInput == CTRL_A)
		{
			var originalCurpos = console.getxy();
			console.gotoxy(1, console.screen_rows);
			console.print("\1n");
			console.clearline();
			console.gotoxy(1, console.screen_rows);

			// Prompt the user to select All, None (un-select all), or Cancel
			console.print("\1n\1gSelect \1c(\1hA\1n\1c)\1gll, \1c(\1hN\1n\1c)\1gone, or \1c(\1hC\1n\1c)\1gancel: \1h\1g");
			var userChoice = getAllowedKeyWithMode("ANC", K_UPPER | K_NOCRLF);
			if ((userChoice == "A") || (userChoice == "N"))
			{
				// Toggle all the messages
				var messageSelectToggle = (userChoice == "A");
				var totalNumMessages = this.NumMessages();
				var messageIndex = 0;
				for (messageIndex = 0; messageIndex < totalNumMessages; ++messageIndex)
					this.ToggleSelectedMessage(this.subBoardCode, messageIndex, messageSelectToggle);
				// Refresh the selected message checkmarks on the screen - Add the
				// checkmarks for messages that are selected, and write a blank space
				// (no checkmark) for messages that are not selected.
				var currentRow = this.lightbarMsgListStartScreenRow;
				var messageIndexEnd = this.lightbarListTopMsgIdx + this.lightbarMsgListNumLines;
				for (messageIndex = this.lightbarListTopMsgIdx; messageIndex < messageIndexEnd; ++messageIndex)
				{
					// Skip the current selected message because that one's checkmark
					// will be refreshed.  Also skip this one if the message has been
					// marked as deleted already.
					if (!this.MessageIsDeleted(messageIndex) && (messageIndex != this.lightbarListSelectedMsgIdx))
					{
						console.gotoxy(this.MSGNUM_LEN+1, currentRow);
						console.print("\1n");
						if (this.MessageIsSelected(this.subBoardCode, messageIndex))
							console.print(this.colors.selectedMsgMarkColor + CHECK_CHAR + "\1n");
						else
							console.print(" \1n");
					}
					++currentRow;
				}
			}

			// Refresh the help line and move the cursor back to its original position
			console.gotoxy(1, console.screen_rows);
			DisplayHelpLine(this.msgListLightbarModeHelpLine);
			console.gotoxy(originalCurpos);
		}
		// Ctrl-D: Batch delete (for selected messages)
		else if (userInput == CTRL_D)
		{
			var originalCurpos = console.getxy();
			if (this.NumSelectedMessages() > 0)
			{
				console.gotoxy(1, console.screen_rows);
				console.print("\1n");
				console.clearline();

				// The PromptAndDeleteSelectedMessages() method will prompt the user for confirmation
				// to delete the message and then delete it if confirmed.
				this.PromptAndDeleteSelectedMessages({ x: 1, y: console.screen_rows});

				// In case all messages were deleted, if that's the case, show
				// an appropriate message and don't continue listing messages.
				//if (this.NumMessages(true) == 0)
				if (!this.NonDeletedMessagesExist())
				{
					continueOn = false;
					// Note: The following doesn't seem to be necessary, since
					// the ReadOrListSubBoard() method will show a message saying
					// there are no messages to read and then will quit out.
					/*
					this.msgbase.close();
					this.msgbase = null;
					console.clear("\1n");
					console.center("\1n\1h\1yThere are no messages to display.");
					console.crlf();
					console.pause();
					*/
				}
				else
				{
					// There are still messages to list, so refresh the screen.
					console.clear("\1n");
					this.WriteMsgListScreenTopHeader();
					DisplayHelpLine(this.msgListLightbarModeHelpLine);
					console.gotoxy(1, this.lightbarMsgListStartScreenRow);
					lastPage = this.ListScreenfulOfMessages(this.lightbarListTopMsgIdx, this.lightbarMsgListNumLines);
					console.gotoxy(originalCurpos); // Put the cursor back where it should be
				}
			}
			else
			{
				// There are no selected messages
				writeWithPause(1, console.screen_rows, "\1n\1h\1yThere are no selected messages.",
				               ERROR_PAUSE_WAIT_MS, "\1n", true);
				// Refresh the help line and move the cursor back to its original position
				DisplayHelpLine(this.msgListLightbarModeHelpLine);
				console.gotoxy(originalCurpos);
			}
		}
	}

	return retObj;
}
// For the DigDistMsgListerClass: Prints a line of information about
// a message.
//
// Parameters:
//  pMsgHeader: The message header object, returned by MsgBase.get_msg_header().
//  pHighlight: Optional boolean - Whether or not to highlight the line (true) or
//              use the standard colors (false).
//  pMsgNum: Optional - A number to use for the message instead of the number/offset
//           in the message header
function DigDistMsgReader_PrintMessageInfo(pMsgHeader, pHighlight, pMsgNum)
{
	// pMsgHeader must be a valid object.
	if (typeof(pMsgHeader) == "undefined")
		return;
	if (pMsgHeader == null)
		return;

	var highlight = false;
	if (typeof(pHighlight) == "boolean")
		highlight = pHighlight;

	// Get the message's import date & time as strings.  If
	// this.msgList_displayMessageDateImported is true, use the message import date.
	// Otherwise, use the message written date.
	var sDate;
	var sTime;
	if (this.msgList_displayMessageDateImported)
	{
		sDate = strftime("%Y-%m-%d", pMsgHeader.when_imported_time);
		sTime = strftime("%H:%M:%S", pMsgHeader.when_imported_time);
	}
	else
	{
		sDate = strftime("%Y-%m-%d", pMsgHeader.when_written_time);
		sTime = strftime("%H:%M:%S", pMsgHeader.when_written_time);
	}

	var msgNum = (typeof(pMsgNum) == "number" ? pMsgNum : pMsgHeader.offset+1);

	// Determine if the message has been deleted.
	var msgDeleted = ((pMsgHeader.attr & MSG_DELETE) == MSG_DELETE);

	// msgIndicatorChar will contain (possibly) a character to display after
	// the message number to indicate whether it has been deleted, selected,
	// etc.  If not, then it will just be a space.
	var msgIndicatorChar = " ";

	// Write the message header information.
	// Note: The message header has the following fields:
	// 'number': The message number
	// 'offset': The message offset
	// 'to': Who the message is directed to (string)
	// 'from' Who wrote the message (string)
	// 'subject': The message subject (string)
	// 'date': The date - Full text (string)
	// To access one of these, use brackets; i.e., msgHeader['to']
	if (highlight)
	{
		if (msgDeleted)
			msgIndicatorChar = "\1n\1r\1h\1i" + this.colors.msgListHighlightBkgColor + "*\1n";
		else if (this.MessageIsSelected(this.subBoardCode, msgNum-1))
			msgIndicatorChar = "\1n" + this.colors.selectedMsgMarkColor + this.colors.msgListHighlightBkgColor + CHECK_CHAR + "\1n";
		printf(this.sMsgInfoFormatHighlightStr,
		       msgNum,
		       msgIndicatorChar,
		       pMsgHeader.from.substr(0, this.FROM_LEN),
		       pMsgHeader.to.substr(0, this.TO_LEN),
		       pMsgHeader.subject.substr(0, this.SUBJ_LEN),
		       sDate, sTime);
	}
	else
	{
		if (msgDeleted)
			msgIndicatorChar = "\1n\1r\1h\1i*\1n";
		else if (this.MessageIsSelected(this.subBoardCode, msgNum-1))
			msgIndicatorChar = "\1n" +  this.colors.selectedMsgMarkColor + CHECK_CHAR + "\1n";

		// Determine whether to use the normal, "to-user", or "from-user" format string.
		// The differences are the colors.  Then, output the message information line.
		var toNameUpper = pMsgHeader.to.toUpperCase();
		var msgToUser = ((toNameUpper == user.alias.toUpperCase()) || (toNameUpper == user.name.toUpperCase()) || (toNameUpper == user.handle.toUpperCase()));
		var fromNameUpper = pMsgHeader.from.toUpperCase();
		var msgIsFromUser = ((fromNameUpper == user.alias.toUpperCase()) || (fromNameUpper == user.name.toUpperCase()) || (fromNameUpper == user.handle.toUpperCase()));
		printf((msgToUser ? this.sMsgInfoToUserFormatStr : (msgIsFromUser ? this.sMsgInfoFromUserFormatStr : this.sMsgInfoFormatStr)),
		       msgNum,
		       msgIndicatorChar,
		       pMsgHeader.from.substr(0, this.FROM_LEN),
		       pMsgHeader.to.substr(0, this.TO_LEN),
		       pMsgHeader.subject.substr(0, this.SUBJ_LEN),
		       sDate, sTime);
	}
	console.cleartoeol("\1n"); // To clear away any extra text that may have been entered by the user
}
// For the traditional interface of DigDistMsgListerClass: Prompts the user to
// continue or read a message (by number).
//
// Parameters:
//  pStart: Whether or not we're on the first page (true or false)
//  pEnd: Whether or not we're at the last page (true or false)
//  pReturnOnMsgSelect: Optional - A boolean to specify whether or not
//                      to return when a message is selected to read.
//  pAllowChgSubBoard: Optional - A boolean to specify whether or not to allow
//                     changing to another sub-board.  Defaults to true.
//
// Return value: An object with the following properties:
//               continueOn: Boolean, whether or not the user wants to continue
//                           listing the messages
//               userInput: The user's input
//               selectedMsgOffset: The offset of the message selected to read,
//                                  if one was selected.  If a message was not
//                                  selected, this will be -1.
function DigDistMsgReader_PromptContinueOrReadMsg(pStart, pEnd, pReturnOnMsgSelect, pAllowChgSubBoard)
{
	// Create the return object and set some initial default values
	var retObj = new Object();
	retObj.continueOn = true;
	retObj.userInput = "";
	retObj.selectedMsgOffset = -1;

	var allowChgSubBoard = (typeof(pAllowChgSubBoard) == "boolean" ? pAllowChgSubBoard : true);

	var continueOn = true;
	// Prompt the user whether or not to continue or to read a message
	// (by message number).  Make use of the different prompt texts,
	// depending whether we're at the beginning, in the middle, or at
	// the end of the message list.
	var userInput = "";
	var allowedKeys = "?GS"; // ? = help, G = Go to message #, S = Select message(s), Ctrl-D: Batch delete
	if (allowChgSubBoard)
		allowedKeys += "C"; // Change to another message area
	if (this.CanDelete() || this.CanDeleteLastMsg())
		allowedKeys += "D"; // Delete
	if (this.CanEdit())
		allowedKeys += "E"; // Edit
	if (pStart && pEnd)
	{
		// This is the only page.
		console.print(this.msgListOnlyOnePageContinuePrompt);
		// Get input from the user.  Allow only Q (quit).
		allowedKeys += "Q";
	}
	else if (pStart)
	{
		// We're on the first page.
		console.print(this.sStartContinuePrompt);
		// Get input from the user.  Allow only L (last), N (next), or Q (quit).
		allowedKeys += "LNQ";
	}
	else if (pEnd)
	{
		// We're on the last page.
		console.print(this.sEndContinuePrompt);
		// Get input from the user.  Allow only F (first), P (previous), or Q (quit).
		allowedKeys += "FPQ";
	}
	else
	{
		// We're neither on the first nor last page.  Allow F (first), L (last),
		// N (next), P (previous), or Q (quit).
		console.print(this.sContinuePrompt);
		allowedKeys += "FLNPQ";
	}
	// Get the user's input.  Allow CTRL-D (batch delete) without echoing it.
	// If the user didn't press CTRL-L, allow the keys in allowedKeys or a number from 1
	// to the highest message number.
	userInput = console.getkey(K_NOECHO);
	if (userInput != CTRL_D)
	{
		console.ungetstr(userInput);
		userInput = console.getkeys(allowedKeys, this.HighestMessageNum()).toString();
	}
	if (userInput == "Q")
		continueOn = false;

	// If the user has typed all numbers, then read that message.
	if ((userInput != "") && /^[0-9]+$/.test(userInput))
	{
		// If the user entered a valid message number, then let the user read the message.
		// The message number might be invalid if there are search results that
		// have non-continuous message numbers.
		if (this.IsValidMessageNum(userInput))
		{
			// Confirm with the user whether to read the message
			var readMsg = true;
			if (this.promptToReadMessage)
			{
				var sReadMsgConfirmText = this.colors["readMsgConfirmColor"]
				                        + "Read message "
				                        + this.colors["readMsgConfirmNumberColor"]
				                        + userInput + this.colors["readMsgConfirmColor"]
				                        + ": Are you sure";
				readMsg = console.yesno(sReadMsgConfirmText);
			}
			if (readMsg)
			{
				// Update the message list screen variables
				this.CalcMsgListScreenIdxVarsFromMsgNum(+userInput);
				// Let the user read the message
				if (pReturnOnMsgSelect)
				{
					// Fill a return object with the required values, and return it.
					retObj.continueOn = continueOn;
					retObj.userInput = userInput;
					retObj.selectedMsgOffset = userInput-1;
					return retObj;
				}
				else
				{
					this.readAMessage = true;
					this.ReadMessage(userInput-1);
				}
			}
			else
				this.deniedReadingMessage = true;

			// Prompt the user whether or not to continue listing
			// messages.
			if (this.promptToContinueListingMessages)
			{
				continueOn = console.yesno(this.colors["afterReadMsg_ListMorePromptColor"] +
				                           "Continue listing messages");
			}
		}
		else
		{
			// The user entered an invalid message number.
			console.print("\1n\1h\1w" + userInput + " \1y is not a valid message number.\1n");
			console.crlf();
			console.pause();
			continueOn = true;
		}
	}

	// Make sure color highlighting is turned off
	console.print("\1n");

	// Fill the return object with the required values, and return it.
	retObj.continueOn = continueOn;
	retObj.userInput = userInput;
	return retObj;
}
// For the DigDistMsgReader Class: Given a message number of a message in the
// current message area, shows the message to the user and allows the user to
// respond.
//
// Parameters:
//  pOffset: The offset of the message to be read
//
// Return value: And object with the following properties:
//               offsetValid: Boolean - Whether or not the passed-in offset was valid
//               userReplied: Boolean - Whether or not the user replied to the message.
//               msgbaseReOpened: Boolean - Whether or not the messagebase is open after
//                                the user replied to the message.  Will be true if
//                                the user didn't reply to the message.
function DigDistMsgReader_ReadMessage(pOffset)
{
	var retObj = new Object();
	retObj.offsetValid = true;
	retObj.userReplied = false;
	retObj.msgbaseReOpened = true;

	// Get the message header
	var msgHeader = this.GetMsgHdrByMsgNum(pOffset+1);
	if (msgHeader == null)
	{
		console.print("\1n" + this.text.invalidMsgNumText.replace("%d", +(pOffset+1)) + "\1n");
		console.inkey(K_NONE, ERROR_PAUSE_WAIT_MS);
		retObj.offsetValid = false;
		return retObj;
	}

	// Show the message header.
	this.DisplaySyncMsgHeader(msgHeader);

	// Show the message body.  Make sure the text is word-wrapped
	// so that it looks good.
	var msgText = this.msgbase.get_msg_body(true, msgHeader.offset);
	var msgTextWrapped = word_wrap(msgText, console.screen_columns-1);
	console.print("\1n" + this.colors["msgBodyColor"]);
	console.putmsg(msgTextWrapped, P_NOATCODES);

	// Hack: If the "from" name in the header is blank (as it might be sometimes), then
	// set it to "All".  This prevents Synchronet from crashing, and it will also default
	// the "to" name in the user's reply to "All".
	if (msgHeader["from"] == "")
		msgHeader["from"] = "All";

	// Mark the message as read, if it was written to the current
	// user.
	var msgToUpper = msgHeader["to"].toUpperCase();
	if ((msgToUpper == user.alias.toUpperCase()) || (msgToUpper == user.name.toUpperCase()))
	{
		msgHeader.attr = (msgHeader.attr | MSG_READ);
		var wroteHeader = this.msgbase.put_msg_header(true, msgHeader.offset, msgHeader);
	}

	// If not reading personal email, then update the scan & last read message pointers.
	if (this.subBoardCode != "mail") // && !this.SearchTypePopulatesSearchResults()
	{
		if (msgHeader.number > msg_area.sub[this.subBoardCode].scan_ptr)
			msg_area.sub[this.subBoardCode].scan_ptr = msgHeader.number;
		msg_area.sub[this.subBoardCode].last_read = msgHeader.number;
	}

	// Allow the user to reply to the message, either publicly or privately.
	console.print("\1n\1cEnd of message. \1hR\1b)\1n\1ceply\1h\1b, " +
	              "\1cP\1b)\1n\1crivate reply\1h\1b, \1cENTER\1b/\1cN\1b)\1n\1co reply\1h\1g: \1n\1c");
	var userKey = console.getkeys("RPN").toString();
	var privateReply = (userKey == "P");
	if ((userKey == "R") || privateReply)
	{
		var replyRetObj = this.ReplyToMsg(msgHeader, msgText, privateReply, pOffset);
		retObj.userReplied = replyRetObj.postSucceeded;
		retObj.msgbaseReOpened = replyRetObj.msgbaseReOpened;
	}

	return retObj;
}
// For the DigDistMsgReader Class: Given a message number of a message in the
// current message area, shows the message to the user and allows the user to
// respond.  This is an enhanced version that allows scrolling up & down the
// message with the up & down arrow keys, and the left & right arrow keys will
// return from the function to allow calling code to navigate back & forth
// through the message sub-board.
//
// Parameters:
//  pOffset: The offset of the message to be read
//  pAllowChgArea: Optional boolean - Whether or not to allow changing the
//                 message area
//
// Return value: And object with the following properties:
//               offsetValid: Boolean - Whether or not the passed-in offset was valid
//               msgDeleted: Boolean - Whether or not the message is marked as deleted
//                           (not deleted by the user in the reader)
//               userReplied: Boolean - Whether or not the user replied to the message.
//               lastKeypress: The last keypress from the user - For navigation purposes
//               newMsgOffset: The offset of another message to read, if the user
//                             input another message number.  If the user did not
//                             input another message number, this will be -1.
//               nextAction: The next action for the caller to take.  This will be
//                           one of the values specified by the ACTION_* constants.
//                           This defaults to ACTION_NONE on error.
//               refreshEnhancedRdrHelpLine: Boolean - Whether or not to refresh the
//                                           enhanced reader help line on the screen
//                                           (for instance, if switched to the traditional
//                                            non-scrolling interface to read the message)
function DigDistMsgReader_ReadMessageEnhanced(pOffset, pAllowChgArea)
{
	var retObj = new Object();
	retObj.offsetValid = true;
	retObj.msgDeleted = false;
	retObj.userReplied = false;
	retObj.lastKeypress = "";
	retObj.newMsgOffset = -1;
	retObj.nextAction = ACTION_NONE;
	retObj.refreshEnhancedRdrHelpLine = false;

	// Get the message header
	var msgHeader = this.GetMsgHdrByIdx(pOffset);
	if (msgHeader == null)
	{
		console.print("\1n" + this.text.invalidMsgNumText.replace("%d", +(pOffset+1)) + "\1n");
		console.crlf();
		console.inkey(K_NONE, ERROR_PAUSE_WAIT_MS);
		retObj.offsetValid = false;
		return retObj;
	}

	// See if the message is marked as deleted.  If so, don't let the
	// user read it, just silently return.
	retObj.msgDeleted = ((msgHeader.attr & MSG_DELETE) == MSG_DELETE);
	if (retObj.msgDeleted)
		return retObj;

	// Update the message list index variables so that the message list is in
	// the right spot for the message currently being read
	this.CalcMsgListScreenIdxVarsFromMsgNum(pOffset+1);

	// Check the pAllowChgArea parameter.  If it's a boolean, then use it.  If
	// not, then check to see if we're reading personal mail - If not, then allow
	// the user to change to a different message area.
	var allowChgMsgArea = true;
	if (typeof(pAllowChgArea) == "boolean")
		allowChgMsgArea = pAllowChgArea;
	else
		allowChgMsgArea = (this.subBoardCode != "mail");

	// Hack: If the "from" name in the header is empty (as it might be sometimes), then
	// set it to "All".  This prevents Synchronet from crashing, and it will also default
	// the "to" name in the user's reply to "All".
	if (msgHeader.from.length == 0)
		msgHeader.from = "All";

	// Some key bindings
	var enhReaderKeys = new Object();
	enhReaderKeys.prevMsgByTitle = "<";
	enhReaderKeys.nextMsgByTitle = ">";
	enhReaderKeys.prevMsgByAuthor = "{";
	enhReaderKeys.nextMsgByAuthor = "}";
	enhReaderKeys.prevMsgByToUser = "[";
	enhReaderKeys.nextMsgByToUser = "]";
	enhReaderKeys.prevMsgByThreadID = "(";
	enhReaderKeys.nextMsgByThreadID = ")";
	enhReaderKeys.prevSubBoard = "-";
	enhReaderKeys.nextSubBoard = "+";
	enhReaderKeys.downloadAttachments = CTRL_A;
	enhReaderKeys.saveToBBSMachine = CTRL_S;
	enhReaderKeys.deleteMessage = KEY_DEL;
	enhReaderKeys.selectMessage = " ";
	enhReaderKeys.batchDelete = CTRL_D;

	// This function converts a thread navigation key character to its
	// corresponding thread type value
	function keypressToThreadType(pKeypress)
	{
		var threadType = THREAD_BY_ID;
		switch (pKeypress)
		{
			case enhReaderKeys.prevMsgByTitle:
			case enhReaderKeys.nextMsgByTitle:
				threadType = THREAD_BY_TITLE;
				break;
			case enhReaderKeys.prevMsgByAuthor:
			case enhReaderKeys.nextMsgByAuthor:
				threadType = THREAD_BY_AUTHOR;
				break;
			case enhReaderKeys.prevMsgByToUser:
			case enhReaderKeys.nextMsgByToUser:
				threadType = THREAD_BY_TO_USER;
				break;
			case enhReaderKeys.prevMsgByThreadID:
			case enhReaderKeys.nextMsgByThreadID:
			default:
				threadType = THREAD_BY_ID;
				break;
		}
		return threadType;
	}

	// Get the message text and see if it has any ANSI codes.  If it has ANSI codes,
	// then don't use the scrolling interface so that the ANSI gets displayed properly.
	var messageText = this.msgbase.get_msg_body(true, msgHeader.offset);
	// If the message has ANSI content, then use the scrolling interface only
	// if frame.js is available on the BBS machine and the option to use the
	// scrolling interface for ANSI messages is enabled.
	var msgHasANSICodes = textHasANSICodes(messageText);
	var useScrollingInterface = this.scrollingReaderInterface && console.term_supports(USER_ANSI);
	if (useScrollingInterface && msgHasANSICodes)
		useScrollingInterface = gFrameJSAvailable && this.useScrollingInterfaceForANSIMessages;
	// If we switch to the non-scrolling interface here, then the calling method should
	// refresh the enhanced reader help line on the screen.
	retObj.refreshEnhancedRdrHelpLine = (this.scrollingReaderInterface && !useScrollingInterface);
	// Use the scrollable reader interface if the setting is enabled & the user's
	// terminal supports ANSI.  Otherwise, use a more traditional user interface.
	if (useScrollingInterface)
	{
		// Show the message header
		this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);

		// Get the message text, interpret any @-codes in it, replace tabs with spaces
		// to prevent weirdness when displaying the message lines, and word-wrap the
		// text so that it looks good on the screen,
		var msgInfo = this.GetMsgInfoForEnhancedReader(msgHeader, true, true, true, messageText, msgHasANSICodes);

		var topMsgLineIdxForLastPage = msgInfo.topMsgLineIdxForLastPage;
		var msgFractionShown = msgInfo.msgFractionShown;
		var numSolidScrollBlocks = msgInfo.numSolidScrollBlocks;
		var numNonSolidScrollBlocks = msgInfo.numNonSolidScrollBlocks;
		var solidBlockStartRow = msgInfo.solidBlockStartRow;
		var solidBlockLastStartRow = solidBlockStartRow;
		var topMsgLineIdx = 0;
		var fractionToLastPage = 0;
		if (topMsgLineIdxForLastPage != 0)
			fractionToLastPage = topMsgLineIdx / topMsgLineIdxForLastPage;

		// Draw an initial scrollbar on the rightmost column of the message area
		// showing the fraction of the message shown and what part of the message
		// is currently being shown.  The scrollbar will be updated minimally in
		// the input loop to minimize screen redraws.
		this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);

		// Input loop (for scrolling the message up & down)
		var msgLineFormatStr = "%-" + this.msgAreaWidth + "s";
		var writeMessage = true;
		// msgAreaHeight, msgReaderObj, and scrollbarUpdateFunction are for use
		// with scrollTextLines().
		var msgAreaHeight = this.msgAreaBottom - this.msgAreaTop + 1;
		var msgReaderObj = this;
		function msgScrollbarUpdateFn(pFractionToLastPage)
		{
			// Update the scrollbar position for the message, depending on the
			// value of pFractionToLastMessage.
			fractionToLastPage = pFractionToLastPage;
			solidBlockStartRow = msgReaderObj.msgAreaTop + Math.floor(numNonSolidScrollBlocks * pFractionToLastPage);
			if (solidBlockStartRow != solidBlockLastStartRow)
				msgReaderObj.UpdateEnhancedReaderScollbar(solidBlockStartRow, solidBlockLastStartRow, numSolidScrollBlocks);
			solidBlockLastStartRow = solidBlockStartRow;
			console.gotoxy(1, console.screen_rows);
		}
		// User input loop
		var continueOn = true;
		while (continueOn)
		{
			// Display the message lines (depending on the value of writeMessage)
			// and handle scroll keys via scrollTextLines().  Handle other keypresses
			// here.
			var scrollRetObj = null;
			if (msgInfo.displayFrame != null)
			{
				msgInfo.displayFrame.draw();
				scrollRetObj = scrollFrame(msgInfo.displayFrame, msgInfo.displayFrameScrollbar,
				                           topMsgLineIdx, this.colors["msgBodyColor"],
				                           writeMessage, 1, console.screen_rows,
										   msgScrollbarUpdateFn);
			}
			else
			{
				scrollRetObj = scrollTextLines(msgInfo.messageLines, topMsgLineIdx,
				                               this.colors["msgBodyColor"], writeMessage,
				                               this.msgAreaLeft, this.msgAreaTop, this.msgAreaWidth,
				                               msgAreaHeight, 1, console.screen_rows,
				                               msgScrollbarUpdateFn);
			}
			topMsgLineIdx = scrollRetObj.topLineIdx;
			retObj.lastKeypress = scrollRetObj.lastKeypress;
			switch (retObj.lastKeypress)
			{
				case enhReaderKeys.deleteMessage: // Delete message
					var originalCurpos = console.getxy();
					// The 2nd to last row of the screen is where the user will
					// be prompted for confirmation to delete the message.
					// Ideally, I'd like to put the cursor on the last row of
					// the screen for this, but console.noyes() lets the enter
					// key shift everything on screen up one row, and there's
					// no way to avoid that.  So, to optimize screen refreshing,
					// the cursor is placed on the 2nd to the last row on the
					// screen to prompt for confirmation.
					var promptPos = this.EnhReaderPrepLast2LinesForPrompt();

					// Prompt the user for confirmation to delete the message.
					// Note: this.PromptAndDeleteMessage() will check to see if the user
					// is a sysop or the message was posted by the user.
					// If the message was deleted, then exit this read method
					// and return KEY_RIGHT as the last keypress so that the
					// calling method will go to the next message/sub-board.
					// Otherwise (if the message was not deleted), refresh the
					// last 2 lines of the message on the screen.
					var msgWasDeleted = this.PromptAndDeleteMessage(pOffset, promptPos, true, this.msgAreaWidth,
					                                                true, msgInfo.attachments);
					if (msgWasDeleted)
					{
						var msgSearchObj = this.LookForNextOrPriorNonDeletedMsg(pOffset);
						continueOn = msgSearchObj.continueInputLoop;
						retObj.newMsgOffset = msgSearchObj.newMsgOffset;
						retObj.nextAction = msgSearchObj.nextAction;
						if (msgSearchObj.promptGoToNextArea)
						{
							if (this.EnhReaderPromptYesNo(this.text.goToNextMsgAreaPromptText, msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr, solidBlockStartRow, numSolidScrollBlocks))
							{
								// Let this method exit and let the caller go to the next sub-board
								continueOn = false;
								retObj.nextAction = ACTION_GO_NEXT_MSG;
							}
							else
								writeMessage = false; // No need to refresh the message
						}
					}
					else
					{
						this.DisplayEnhReaderError("", msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr);
						// Move the cursor back to its original position
						console.gotoxy(originalCurpos);
						writeMessage = false;
					}
					break;
				case enhReaderKeys.selectMessage: // Select message (for batch delete, etc.)
					var originalCurpos = console.getxy();
					var promptPos = this.EnhReaderPrepLast2LinesForPrompt();
					if (this.EnhReaderPromptYesNo("Select this message", msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr, solidBlockStartRow, numSolidScrollBlocks, true))
						this.ToggleSelectedMessage(this.subBoardCode, pOffset, true);
					else
						this.ToggleSelectedMessage(this.subBoardCode, pOffset, false);
					writeMessage = false; // No need to refresh the message
					break;
				case enhReaderKeys.batchDelete:
					// TODO: Write this?  Not sure yet if it makes much sense to
					// have batch delete in the reader interface.
					// Prompt the user for confirmation, and use
					// this.DeleteSelectedMessages() to mark the selected messages
					// as deleted.
					// Returns an object with the following properties:
					//  deletedAll: Boolean - Whether or not all messages were successfully marked
					//              for deletion
					//  failureList: An object containing indexes of messages that failed to get
					//               marked for deletion, indexed by internal sub-board code, then
					//               containing messages indexes as properties.  Reasons for failing
					//               to mark messages deleted can include the user not having permission
					//               to delete in a sub-board, failure to open the sub-board, etc.
					writeMessage = false; // No need to refresh the message
					break;
				case "E": // Edit the messaage
					if (this.CanEdit())
					{
						// Move the cursor to the last line in the message area so
						// the edit confirmation prompt will appear there.  Not using
						// the last line on the screen because the yes/no prompt will
						// output a carriage return and move everything on the screen
						// up one line, which is not ideal in case the user says No.
						var promptPos = this.EnhReaderPrepLast2LinesForPrompt();
						// Let the user edit the message if they want to
						var editReturnObj = this.EditExistingMsg(pOffset);
						// If the user didn't confirm, then we only have to refresh the bottom
						// help line.  Otherwise, we need to refresh everything on the screen.
						if (!editReturnObj.userConfirmed)
						{
							// For some reason, the yes/no prompt erases the last character
							// of the scrollbar - So, figure out which block was there and
							// refresh it.
							//var scrollBarBlock = "\1n\1h\1k" + BLOCK1; // Dim block
							// Dim block
							var scrollBarBlock = this.colors.scrollbarBGColor + this.text.scrollbarBGChar;
							if (solidBlockStartRow + numSolidScrollBlocks - 1 == this.msgAreaBottom)
							{
								//scrollBarBlock = "\1w" + BLOCK2; // Bright block
								// Bright block
								scrollBarBlock = this.colors.scrollbarScrollBlockColor + this.text.scrollbarScrollBlockChar;
							}
							console.gotoxy(this.msgAreaRight+1, this.msgAreaBottom);
							console.print(scrollBarBlock);
							// Refresh the last 2 message lines on the screen, then display
							// the key help line
							this.DisplayEnhReaderError("", msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr);
							this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
							writeMessage = false;
						}
						else
						{
							// If the message was edited, then refresh the text lines
							// array and update the other message-related variables.
							if (editReturnObj.msgEdited && (editReturnObj.newMsgIdx > -1))
							{
								// When the message is edited, the old message will be
								// deleted and the edited message will be posted as a new
								// message.  So we should return to the caller and have it
								// go directly to that new message.
								this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
								continueOn = false;
								retObj.newMsgOffset = editReturnObj.newMsgIdx;
							}
							else
							{
								// The message was not edited.  Refresh everything on the screen.
								// If the enhanced message header width is less than the console
								// width, then clear the screen to remove anything that might be
								// left on the screen by the message editor.
								if (this.enhMsgHeaderWidth < console.screen_columns)
									console.clear("\1n");
								// Display the message header and key help line
								this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);
								this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
								// Display the scrollbar again, and ensure it's in the correct position
								solidBlockStartRow = this.msgAreaTop + Math.floor(numNonSolidScrollBlocks * fractionToLastPage);
								this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);
								writeMessage = true; // We want to refresh the message on the screen
							}
						}
					}
					else
						writeMessage = false; // Don't write the current message again
					break;
				case "?": // Show the help screen
					this.DisplayEnhancedReaderHelp(allowChgMsgArea, msgInfo.attachments.length > 0);
					// If the enhanced message header width is less than the console
					// width, then clear the screen to remove anything left on the
					// screen from the help screen.
					if (this.enhMsgHeaderWidth < console.screen_columns)
						console.clear("\1n");
					// Display the message header and key help line
					this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);
					this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
					// Display the scrollbar again, and ensure it's in the correct position
					solidBlockStartRow = this.msgAreaTop + Math.floor(numNonSolidScrollBlocks * fractionToLastPage);
					this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);
					writeMessage = true; // We want to refresh the message on the screen
					break;
				case "R": // Reply to the message
				case "I": // Private message reply
					// If the user pressed P (private reply) while reading private
					// mail, then do nothing (allow only the "R" key to reply).
					var privateReply = (retObj.lastKeypress == "I");
					if (privateReply && this.readingPersonalEmail)
						writeMessage = false; // Don't re-write the current message again
					else
					{
						// Let the user reply to the message.
						var replyRetObj = this.ReplyToMsg(msgHeader, msgInfo.msgText, privateReply, pOffset);
						                                  retObj.userReplied = replyRetObj.postSucceeded;
						//retObj.msgDeleted = replyRetObj.msgWasDeleted;
						var msgWasDeleted = replyRetObj.msgWasDeleted;
						//if (retObj.msgDeleted)
						if (msgWasDeleted)
						{
							var msgSearchObj = this.LookForNextOrPriorNonDeletedMsg(pOffset);
							continueOn = msgSearchObj.continueInputLoop;
							retObj.newMsgOffset = msgSearchObj.newMsgOffset;
							retObj.nextAction = msgSearchObj.nextAction;
							if (msgSearchObj.promptGoToNextArea)
							{
								if (this.EnhReaderPromptYesNo(this.text.goToNextMsgAreaPromptText, msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr, solidBlockStartRow, numSolidScrollBlocks))
								{
									// Let this method exit and let the caller go to the next sub-board
									continueOn = false;
									retObj.nextAction = ACTION_GO_NEXT_MSG;
								}
								else
									writeMessage = true; // We want to refresh the message on the screen
							}
						}
						else
						{
							// If the messagebase object was successfully re-opened after
							// posting the message, then refresh the screen.  Otherwise,
							// we'll want to quit.
							if (replyRetObj.msgbaseReOpened)
							{
								// If the enhanced message header width is less than the console
								// width, then clear the screen to remove anything left on the
								// screen by the message editor.
								if (this.enhMsgHeaderWidth < console.screen_columns)
									console.clear("\1n");
								// Display the message header and key help line again
								this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);
								this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
								// Display the scrollbar again to refresh it on the screen
								solidBlockStartRow = this.msgAreaTop + Math.floor(numNonSolidScrollBlocks * fractionToLastPage);
								this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);
								writeMessage = true; // We want to refresh the message on the screen
							}
							else
							{
								retObj.nextAction = ACTION_QUIT;
								continueOn = false;
								// Display an error
								console.print("\1n");
								console.crlf();
								console.print("\1h\1yMessagebase error after replying.  Aborting.\1n");
								mswait(ERROR_PAUSE_WAIT_MS);
							}
						}
					}
					break;
				case "P": // Post a message
					if (!this.readingPersonalEmail)
					{
						// Let the user post a message.
						if (bbs.post_msg(this.subBoardCode))
						{
							if (searchTypePopulatesSearchResults(this.searchType))
							{
								// TODO: If the user is doing a search, it might be
								// useful to search their new message and add it to
								// the search results if it's a match..  but maybe
								// not?
							}
							console.pause();
						}

						// Refresh things on the screen
						// Display the message header and key help line again
						this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);
						this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
						// Display the scrollbar again to refresh it on the screen
						solidBlockStartRow = this.msgAreaTop + Math.floor(numNonSolidScrollBlocks * fractionToLastPage);
						this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);
						writeMessage = true; // We want to refresh the message on the screen
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
				// Numeric digit: The start of a number of a message to read
				case "0":
				case "1":
				case "2":
				case "3":
				case "4":
				case "5":
				case "6":
				case "7":
				case "8":
				case "9":
					var originalCurpos = console.getxy();
					// Put the user's input back in the input buffer to
					// be used for getting the rest of the message number.
					console.ungetstr(retObj.lastKeypress);
					// Move the cursor to the 2nd to last row of the screen and
					// prompt the user for the message number.  Ideally, I'd like
					// to put the cursor on the last row of the screen for this, but
					// console.getnum() lets the enter key shift everything on screen
					// up one row, and there's no way to avoid that.  So, to optimize
					// screen refreshing, the cursor is placed on the 2nd to the last
					// row on the screen to prompt for the message number.
					var promptPos = this.EnhReaderPrepLast2LinesForPrompt();
					// Prompt for the message number
					var msgNumInput = this.PromptForMsgNum(promptPos, this.text.readMsgNumPromptText, false, ERROR_PAUSE_WAIT_MS, false);
					// Only allow reading the message if the message number is valid
					// and it's not the same message number that was passed in.
					if ((msgNumInput > 0) && (msgNumInput-1 != pOffset))
					{
						// If the message is marked as deleted, then output an error
						if (this.MessageIsDeleted(msgNumInput-1))
						{
							writeWithPause(this.msgAreaLeft, console.screen_rows-1,
							               "\1n" + this.text.msgHasBeenDeletedText.replace("%d", msgNumInput) + "\1n",
							               ERROR_PAUSE_WAIT_MS, "\1n", true);
						}
						else
						{
							// Confirm with the user whether to read the message
							var readMsg = true;
							if (this.promptToReadMessage)
							{
								var sReadMsgConfirmText = this.colors["readMsgConfirmColor"]
														+ "Read message "
														+ this.colors["readMsgConfirmNumberColor"]
														+ msgNumInput + this.colors["readMsgConfirmColor"]
														+ ": Are you sure";
								console.gotoxy(promptPos);
								console.print("\1n");
								readMsg = console.yesno(sReadMsgConfirmText);
							}
							if (readMsg)
							{
								continueOn = false;
								retObj.newMsgOffset = msgNumInput - 1;
								retObj.nextAction = ACTION_GO_SPECIFIC_MSG;
							}
							else
								writeMessage = false; // Don't re-write the current message again
						}
					}
					else // Message number invalid or the same as what was passed in
						writeMessage = false; // Don't re-write the current message again

					// If the user chose to continue reading messages, then refresh
					// the last 2 message lines in the last part of the message area
					// and then put the cursor back to its original position.
					if (continueOn)
					{
						this.DisplayEnhReaderError("", msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr);
						// Move the cursor back to its original position
						console.gotoxy(originalCurpos);
					}
					break;
				case enhReaderKeys.prevMsgByTitle: // Previous message by title
				case enhReaderKeys.prevMsgByAuthor: // Previous message by author
				case enhReaderKeys.prevMsgByToUser: // Previous message by 'to user'
				case enhReaderKeys.prevMsgByThreadID: // Previous message by thread ID
					// Only allow this if we aren't doing a message search.
					if (!this.SearchingAndResultObjsDefinedForCurSub())
					{
						var threadPrevMsgOffset = this.FindThreadPrevOffset(msgHeader,
						                                                    keypressToThreadType(retObj.lastKeypress),
																			true);
						if (threadPrevMsgOffset > -1)
						{
							retObj.newMsgOffset = threadPrevMsgOffset;
							retObj.nextAction = ACTION_GO_SPECIFIC_MSG;
							continueOn = false;
						}
						else
						{
							// Refresh the help line at the bottom of the screen
							//this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
							writeMessage = false; // Don't re-write the current message again
						}
						// Make sure the help line on the bottom of the screen is
						// drawn.
						this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
				case enhReaderKeys.nextMsgByTitle: // Next message by title (subject)
				case enhReaderKeys.nextMsgByAuthor: // Next message by author
				case enhReaderKeys.nextMsgByToUser: // Next message by 'to user'
				case enhReaderKeys.nextMsgByThreadID: // Next message by thread ID
					// Only allow this if we aren't doing a message search.
					if (!this.SearchingAndResultObjsDefinedForCurSub())
					{
						var threadPrevMsgOffset = this.FindThreadNextOffset(msgHeader,
						                                                    keypressToThreadType(retObj.lastKeypress),
																			true);
						if (threadPrevMsgOffset > -1)
						{
							retObj.newMsgOffset = threadPrevMsgOffset;
							retObj.nextAction = ACTION_GO_SPECIFIC_MSG;
							continueOn = false;
						}
						else
							writeMessage = false; // Don't re-write the current message again
						// Make sure the help line on the bottom of the screen is
						// drawn.
						this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
				case KEY_LEFT: // Previous message
					// Look for a prior message that isn't marked for deletion.  Even
					// if we don't find one, we'll still want to return from this
					// function (with message index -1) so that this script can go
					// onto the previous message sub-board/group.
					retObj.newMsgOffset = this.FindNextNonDeletedMsgIdx(pOffset, false);
					// As a screen redraw optimization: Only return if there is a valid new
					// message offset or the user is allowed to change to a different sub-board.
					// Otherwise, don't return, and don't refresh the message on the screen.
					var goToPrevMessage = false;
					if ((retObj.newMsgOffset > -1) || allowChgMsgArea)
					{
						if (retObj.newMsgOffset == -1 && !curMsgSubBoardIsLast())
						{
							goToPrevMessage = this.EnhReaderPromptYesNo(this.text.goToPrevMsgAreaPromptText,
							                                            msgInfo.messageLines, topMsgLineIdx,
							                                            msgLineFormatStr, solidBlockStartRow,
							                                            numSolidScrollBlocks);
						}
						else
						{
							// We're not at the beginning of the sub-board, so it's okay to exit this
							// method and go to the previous message.
							goToPrevMessage = true;
						}
					}
					if (goToPrevMessage)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_PREVIOUS_MSG;
					}
					else
						writeMessage = false; // No need to refresh the message
					break;
				case KEY_RIGHT: // Next message
				case KEY_ENTER:
					// Look for a later message that isn't marked for deletion.  Even
					// if we don't find one, we'll still want to return from this
					// function (with message index -1) so that this script can go
					// onto the next message sub-board/group.
					retObj.newMsgOffset = this.FindNextNonDeletedMsgIdx(pOffset, true);
					// Note: Unlike the left arrow key, we want to exit this method when
					// navigating to the next message, regardless of whether or not the
					// user is allowed to change to a different sub-board, so that processes
					// that require continuation (such as new message scan) can continue.
					// Still, if there are no more readable messages in the current sub-board
					// (and thus the user would go onto the next message area), prompt the
					// user whether they want to continue onto the next message area.
					if (retObj.newMsgOffset == -1 && !curMsgSubBoardIsLast())
					{
						// For personal mail, don't do anything, and don't refresh the
						// message.  In a sub-board, ask the user if they want to go
						// to the next one.
						if (this.readingPersonalEmail)
							writeMessage = false;
						else
						{
							// If configured to allow the user to post in the sub-board
							// instead of going to the next message area and we're not
							// scanning, then do so.
							if (this.readingPostOnSubBoardInsteadOfGoToNext && !this.doingMsgScan)
							{
								console.print("\1n");
								console.crlf();
								// Ask the user if they want to post on the sub-board.
								// If they say yes, then do so before exiting.
								if (!console.noyes(format(this.text.postOnSubBoard, this.msgbase.cfg.grp_name, this.msgbase.cfg.description)))
									bbs.post_msg(this.subBoardCode);
								continueOn = false;
								retObj.nextAction = ACTION_QUIT;
							}
							else
							{
								// Prompt the user whether they want to go to the next message area
								if (this.EnhReaderPromptYesNo(this.text.goToNextMsgAreaPromptText, msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr, solidBlockStartRow, numSolidScrollBlocks))
								{
									// Let this method exit and let the caller go to the next sub-board
									continueOn = false;
									retObj.nextAction = ACTION_GO_NEXT_MSG;
								}
								else
									writeMessage = false; // No need to refresh the message
							}
						}
					}
					else
					{
						// We're not at the end of the sub-board, so it's okay to exit this
						// method and go to the next message.
						continueOn = false;
						retObj.nextAction = ACTION_GO_NEXT_MSG;
					}
					break;
					// First & last message: Quit out of this input loop and let the
					// calling function, this.ReadMessages(), handle the action.
				case "F": // First message
					// Only leave this function if we aren't already on the first message.
					if (pOffset > 0)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_FIRST_MSG;
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
				case "L": // Last message
					// Only leave this function if we aren't already on the last message.
					if (pOffset < this.NumMessages() - 1)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_LAST_MSG;
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
				case enhReaderKeys.prevSubBoard: // Go to the previous message area
					if (allowChgMsgArea)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_PREV_MSG_AREA;
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
				case enhReaderKeys.nextSubBoard: // Go to the next message area
					if (allowChgMsgArea || this.doingMultiSubBoardScan)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_NEXT_MSG_AREA;
					}
					else
						writeMessage = false; // Don't re-write the current message again
					break;
					// H and K: Display the extended message header info/kludge lines
					// (for the sysop)
				case "H":
				case "K":
					if (gIsSysop)
					{
						// Save the original cursor position
						var originalCurPos = console.getxy();

						// Get an array of the extended header info/kludge lines and then
						// allow the user to scroll through them.
						var extdHdrInfoLines = this.GetExtdMsgHdrInfo(msgHeader, (retObj.lastKeypress == "K"));
						if (extdHdrInfoLines.length > 0)
						{
							// Calculate information for the scrollbar for the kludge lines
							var infoFractionShown = this.msgAreaHeight / extdHdrInfoLines.length;
							if (infoFractionShown > 1)
								infoFractionShown = 1.0;
							var numInfoSolidScrollBlocks = Math.floor(this.msgAreaHeight * infoFractionShown);
							if (numInfoSolidScrollBlocks == 0)
								numInfoSolidScrollBlocks = 1;
							var numNonSolidInfoScrollBlocks = this.msgAreaHeight - numInfoSolidScrollBlocks;
							var lastInfoSolidBlockStartRow = this.msgAreaTop;
							// Define a scrollbar update function for the header info/kludge lines
							function msgInfoScrollbarUpdateFn(pFractionToLastPage)
							{
								var infoSolidBlockStartRow = msgReaderObj.msgAreaTop + Math.floor(numNonSolidInfoScrollBlocks * pFractionToLastPage);
								if (infoSolidBlockStartRow != lastInfoSolidBlockStartRow)
									msgReaderObj.UpdateEnhancedReaderScollbar(infoSolidBlockStartRow, lastInfoSolidBlockStartRow, numInfoSolidScrollBlocks);
								lastInfoSolidBlockStartRow = infoSolidBlockStartRow;
								console.gotoxy(1, console.screen_rows);
							}
							// Display the kludge lines and let the user scroll through them
							this.DisplayEnhancedReaderWholeScrollbar(this.msgAreaTop, numInfoSolidScrollBlocks);
							scrollTextLines(extdHdrInfoLines, 0, this.colors["msgBodyColor"], true,
							this.msgAreaLeft, this.msgAreaTop, this.msgAreaWidth,
							msgAreaHeight, 1, console.screen_rows,
							msgInfoScrollbarUpdateFn);
							// Display the scrollbar for the message to refresh it on the screen
							solidBlockStartRow = this.msgAreaTop + Math.floor(numNonSolidScrollBlocks * fractionToLastPage);
							this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);
							writeMessage = true; // We want to refresh the message on the screen
						}
						else
						{
							// There are no kludge lines for this message
							this.DisplayEnhReaderError(this.text.noKludgeLinesForThisMsgText, msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr);
							console.gotoxy(originalCurPos);
							writeMessage = false;
						}
					}
					else // The user is not a sysop
						writeMessage = false;
					break;
					// Message list, change message area: Quit out of this input loop
					// and let the calling function, this.ReadMessages(), handle the
					// action.
				case "M": // Message list
					retObj.nextAction = ACTION_DISPLAY_MSG_LIST;
					continueOn = false;
					break;
				case "C": // Change message area, if allowed
					if (allowChgMsgArea)
					{
						retObj.nextAction = ACTION_CHG_MSG_AREA;
						continueOn = false;
					}
					else
						writeMessage = false; // No need to refresh the message
					break;
				case enhReaderKeys.downloadAttachments: // Download attachments
					if (msgInfo.attachments.length > 0)
					{
						console.print("\1n");
						console.gotoxy(1, console.screen_rows);
						console.crlf();
						console.print("\1c- Download Attached Files -\1n");
						// Note: sendAttachedFiles() will output a CRLF at the beginning.
						sendAttachedFiles(msgInfo.attachments);

						// Refresh things on the screen
						console.clear("\1n");
						// Display the message header and key help line again
						this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);
						this.DisplayEnhancedMsgReadHelpLine(console.screen_rows, allowChgMsgArea);
						// Display the scrollbar again to refresh it on the screen
						solidBlockStartRow = this.msgAreaTop + Math.floor(numNonSolidScrollBlocks * fractionToLastPage);
						this.DisplayEnhancedReaderWholeScrollbar(solidBlockStartRow, numSolidScrollBlocks);
						writeMessage = true; // We want to refresh the message on the screen
					}
					else
						writeMessage = false;
					break;
				case enhReaderKeys.saveToBBSMachine:
					// Save the message to the BBS machine - Only allow this
					// if the user is a sysop.
					if (gIsSysop)
					{
						// Prompt the user for a filename to save the message to the
						// BBS machine
						var promptPos = this.EnhReaderPrepLast2LinesForPrompt();
						console.print("\1n\1cFilename:\1h");
						var inputLen = console.screen_columns - 10; // 10 = "Filename:" length + 1
						var filename = console.getstr(inputLen, K_NOCRLF);
						console.print("\1n");
						if (filename.length > 0)
						{
							//var saveMsgRetObj = this.SaveMsgToFile(msgHeader, filename, true, msgInfo.messageLines);
							var saveMsgRetObj = this.SaveMsgToFile(msgHeader, filename, true);
							console.gotoxy(promptPos);
							console.cleartoeol("\1n");
							console.gotoxy(promptPos);
							if (saveMsgRetObj.succeeded)
								console.print("\1n\1cThe message has been saved.\1n");
							else
								console.print("\1n\1y\1hFailed: " + saveMsgRetObj.errorMsg + "\1n");
							mswait(ERROR_PAUSE_WAIT_MS);
						}
						else
						{
							console.gotoxy(promptPos);
							console.print("\1n\1y\1hMessage not exported\1n");
							mswait(ERROR_PAUSE_WAIT_MS);
						}
						// Refresh the last 2 lines of the message on the screen to overwrite
						// the file save prompt
						this.DisplayEnhReaderError("", msgInfo.messageLines, topMsgLineIdx, msgLineFormatStr);
						writeMessage = false; // Don't write the whole message again
					}
					else
						writeMessage = false;
					break;
				case "Q": // Quit
					retObj.nextAction = ACTION_QUIT;
					continueOn = false;
					break;
				default:
					writeMessage = false;
					break;
			}
		}
	}
	else
	{
		// Use the non-scrolling interface.
		// Separate the message text from any attachments in the message.
		var msgAndAttachmentInfo = determineMsgAttachments(msgHeader, messageText, true);
		// Only interpret @-codes if the user is reading personal email.  There
		// are many @-codes that do some action such as move the cursor, execute a
		// script, etc., and I don't want users on message networks to do anything
		// malicious to users on other BBSes.
		if (this.readingPersonalEmail)
			msgAndAttachmentInfo.msgText = replaceAtCodesInStr(msgAndAttachmentInfo.msgText); // Or this.ParseMsgAtCodes(msgAndAttachmentInfo.msgText, msgHeader) to replace only some @ codes
		var msgTextWrapped = word_wrap(msgAndAttachmentInfo.msgText, console.screen_columns-1);

		// Generate the key help text
		var keyHelpText = "\1n\1c\1h#\1n\1b, \1c\1hLeft\1n\1b, \1c\1hRight\1n\1b, ";
		if (this.CanDelete() || this.CanDeleteLastMsg())
			keyHelpText += "\1c\1hDEL\1b, ";
		if (this.CanEdit())
			keyHelpText += "\1c\1hE\1y)\1n\1cdit\1b, ";
		keyHelpText += "\1c\1hF\1y)\1n\1cirst\1b, \1c\1hL\1y)\1n\1cast\1b, \1c\1hR\1y)\1n\1ceply\1b, ";
		// If the user is allowed to change to a different message area, then
		// include that option.
		if (allowChgMsgArea)
		{
			// If there's room for the private reply option, then include that
			// before the change area option.
			if (console.screen_columns >= 89)
				keyHelpText += "\1c\1hP\1y)\1n\1crivate reply\1b, ";
			keyHelpText += "\1c\1hC\1y)\1n\1chg area\1b, ";
		}
		else
		{
			// The user isn't allowed to change to a different message area.
			// Go ahead and include the private reply option.
			keyHelpText += "\1c\1hP\1y)\1n\1crivate reply\1b, ";
		}
		keyHelpText += "\1c\1hQ\1y)\1n\1cuit\1b, \1c\1h?\1g: \1c";

		// User input loop
		var writeMessage = true;
		var writePromptText = true;
		var continueOn = true;
		while (continueOn)
		{
			if (writeMessage)
			{
				if (console.term_supports(USER_ANSI))
					console.clear("\1n");
				// Write the message header & message body to the screen
				this.DisplayEnhancedMsgHdr(msgHeader, pOffset+1, 1);
				console.print("\1n" + this.colors["msgBodyColor"]);
				console.putmsg(msgTextWrapped, P_NOATCODES);
			}
			// Write the prompt text
			if (writePromptText)
				console.print(keyHelpText);
			// Default the writing of the message & input prompt to true for the
			// next iteration.
			writeMessage = true;
			writePromptText = true;
			// Input a key from the user and take action based on the keypress.
			retObj.lastKeypress = getKeyWithESCChars(K_UPPER/*|K_NOCRLF|K_NOECHO|K_NOSPIN*/);
			switch (retObj.lastKeypress)
			{
				case enhReaderKeys.deleteMessage: // Delete message
					console.crlf();
					// Prompt the user for confirmation to delete the message.
					// Note: this.PromptAndDeleteMessage() will check to see if the user
					// is a sysop or the message was posted by the user.
					// If the message was deleted, then exit this read method
					// and return KEY_RIGHT as the last keypress so that the
					// calling method will go to the next message/sub-board.
					// Otherwise (if the message was not deleted), refresh the
					// last 2 lines of the message on the screen.
					// TODO: For the DeleteMessage() call, pass the array of file
					// attachments for it to delete (i.e., msgInfo.attachments)
					var msgWasDeleted = this.PromptAndDeleteMessage(pOffset);
					if (msgWasDeleted)
					{
						var msgSearchObj = this.LookForNextOrPriorNonDeletedMsg(pOffset);
						continueOn = msgSearchObj.continueInputLoop;
						retObj.newMsgOffset = msgSearchObj.newMsgOffset;
						retObj.nextAction = msgSearchObj.nextAction;
						if (msgSearchObj.promptGoToNextArea)
						{
							if (console.yesno(this.text.goToNextMsgAreaPromptText))
							{
								// Let this method exit and let the caller go to the next sub-board
								continueOn = false;
								retObj.nextAction = ACTION_GO_NEXT_MSG;
							}
							else
								writeMessage = false; // No need to refresh the message
						}
					}
					break;
				case enhReaderKeys.selectMessage: // Select message (for batch delete, etc.)
					console.crlf();
					var selectMessage = !console.noyes("Select this message");
					this.ToggleSelectedMessage(this.subBoardCode, pOffset, selectMessage);
					break;
				case enhReaderKeys.batchDelete:
					// TODO: Write this?  Not sure yet if it makes much sense to
					// have batch delete in the reader interface.
					// Prompt the user for confirmation, and use
					// this.DeleteSelectedMessages() to mark the selected messages
					// as deleted.
					// Returns an object with the following properties:
					//  deletedAll: Boolean - Whether or not all messages were successfully marked
					//              for deletion
					//  failureList: An object containing indexes of messages that failed to get
					//               marked for deletion, indexed by internal sub-board code, then
					//               containing messages indexes as properties.  Reasons for failing
					//               to mark messages deleted can include the user not having permission
					//               to delete in a sub-board, failure to open the sub-board, etc.
					writeMessage = false; // No need to refresh the message
					break;
				case "E": // Edit the message
					if (this.CanEdit())
					{
						console.crlf();
						// Let the user edit the message if they want to
						var editReturnObj = this.EditExistingMsg(pOffset);
						// If the user confirmed editing the message, then see if the
						// message was edited and refresh the screen accordingly.
						if (editReturnObj.userConfirmed)
						{
							// If the message was edited, then refresh the text lines
							// array and update the other message-related variables.
							if (editReturnObj.msgEdited && (editReturnObj.newMsgIdx > -1))
							{
								// When the message is edited, the old message will be
								// deleted and the edited message will be posted as a new
								// message.  So we should return to the caller and have it
								// go directly to that new message.
								continueOn = false;
								retObj.newMsgOffset = editReturnObj.newMsgIdx;
							}
						}
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
				case "?": // Show help
					if (!console.term_supports(USER_ANSI))
					{
						console.crlf();
						console.crlf();
					}
					this.DisplayEnhancedReaderHelp(allowChgMsgArea, msgAndAttachmentInfo.attachments.length > 0);
					if (!console.term_supports(USER_ANSI))
					{
						console.crlf();
						console.crlf();
					}
					break;
				case "R": // Reply to the message
				case "I": // Private reply
					// If the user pressed P (private reply) while reading private
					// mail, then do nothing (allow only the "R" key to reply).
					// If not reading personal email, go ahead and let the user reply
					// with either the "P" or "R" keypress.
					var privateReply = (retObj.lastKeypress == "I");
					if (privateReply && this.readingPersonalEmail)
					{
						writeMessage = false; // Don't re-write the current message again
						writePromptText = false; // Don't write the prompt text again
					}
					else
					{
						console.crlf();
						var replyRetObj = this.ReplyToMsg(msgHeader, msgAndAttachmentInfo.msgText, privateReply, pOffset);
						retObj.userReplied = replyRetObj.postSucceeded;
						//retObj.msgDeleted = replyRetObj.msgWasDeleted;
						var msgWasDeleted = replyRetObj.msgWasDeleted;
						if (msgWasDeleted)
						{
							var msgSearchObj = this.LookForNextOrPriorNonDeletedMsg(pOffset);
							continueOn = msgSearchObj.continueInputLoop;
							retObj.newMsgOffset = msgSearchObj.newMsgOffset;
							retObj.nextAction = msgSearchObj.nextAction;
							if (msgSearchObj.promptGoToNextArea)
							{
								if (console.yesno(this.text.goToNextMsgAreaPromptText))
								{
									// Let this method exit and let the caller go to the next sub-board
									continueOn = false;
									retObj.nextAction = ACTION_GO_NEXT_MSG;
								}
								else
									writeMessage = true; // We want to refresh the message on the screen
							}
						}
						else
						{
							// If the messagebase object was not successfully re-opened
							// after posting the message, then  we'll want to quit.
							if (!replyRetObj.msgbaseReOpened)
							{
								retObj.nextAction = ACTION_QUIT;
								continueOn = false;
								// Display an error
								console.print("\1n");
								console.crlf();
								console.print("\1h\1yMessagebase error after replying.  Aborting.\1n");
								mswait(ERROR_PAUSE_WAIT_MS);
							}
						}
					}
					break;
				case "P": // Post a message
					if (!this.readingPersonalEmail)
					{
						// Let the user post a message.
						if (bbs.post_msg(this.subBoardCode))
						{
							// TODO: If the user is doing a search, it might be
							// useful to search their new message and add it to
							// the search results if it's a match..  but maybe
							// not?
						}

						console.pause();

						// We'll want to refresh the message & prompt text on the screen
						writeMessage = true;
						writePromptText = true;
					}
					else
					{
						// Don't write the current message or prompt text in the next iteration
						writeMessage = false;
						writePromptText = false;
					}
					break;
				// Numeric digit: The start of a number of a message to read
				case "0":
				case "1":
				case "2":
				case "3":
				case "4":
				case "5":
				case "6":
				case "7":
				case "8":
				case "9":
					console.crlf();
					// Put the user's input back in the input buffer to
					// be used for getting the rest of the message number.
					console.ungetstr(retObj.lastKeypress);
					// Prompt for the message number
					var msgNumInput = this.PromptForMsgNum(null, this.text.readMsgNumPromptText, false, ERROR_PAUSE_WAIT_MS, false);
					// Only allow reading the message if the message number is valid
					// and it's not the same message number that was passed in.
					if ((msgNumInput > 0) && (msgNumInput-1 != pOffset))
					{
						// If the message is marked as deleted, then output an error
						if (this.MessageIsDeleted(msgNumInput-1))
						{
							console.crlf();
							console.print("\1n" + this.text.msgHasBeenDeletedText.replace("%d", msgNumInput) + "\1n");
							console.crlf();
							console.pause();
						}
						else
						{
							// Confirm with the user whether to read the message
							var readMsg = true;
							if (this.promptToReadMessage)
							{
								readMsg = console.yesno("\1n" + this.colors["readMsgConfirmColor"]
								                        + "Read message "
								                        + this.colors["readMsgConfirmNumberColor"]
								                        + msgNumInput + this.colors["readMsgConfirmColor"]
								                        + ": Are you sure");
							}
							if (readMsg)
							{
								continueOn = false;
								retObj.newMsgOffset = msgNumInput - 1;
								retObj.nextAction = ACTION_GO_SPECIFIC_MSG;
							}
						}
					}
					break;
				case enhReaderKeys.prevMsgByTitle: // Previous message by title
				case enhReaderKeys.prevMsgByAuthor: // Previous message by author
				case enhReaderKeys.prevMsgByToUser: // Previous message by 'to user'
				case enhReaderKeys.prevMsgByThreadID: // Previous message by thread ID
					// Only allow this if we aren't doing a message search.
					if (!this.SearchingAndResultObjsDefinedForCurSub())
					{
						console.crlf(); // For the "Searching..." text
						var threadPrevMsgOffset = this.FindThreadPrevOffset(msgHeader,
						                                                    keypressToThreadType(retObj.lastKeypress),
																			false);
						if (threadPrevMsgOffset > -1)
						{
							retObj.newMsgOffset = threadPrevMsgOffset;
							retObj.nextAction = ACTION_GO_SPECIFIC_MSG;
							continueOn = false;
						}
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
				case enhReaderKeys.nextMsgByTitle: // Next message by title (subject)
				case enhReaderKeys.nextMsgByAuthor: // Next message by author
				case enhReaderKeys.nextMsgByToUser: // Next message by 'to user'
				case enhReaderKeys.nextMsgByThreadID: // Next message by thread ID
					// Only allow this if we aren't doing a message search.
					if (!this.SearchingAndResultObjsDefinedForCurSub())
					{
						console.crlf(); // For the "Searching..." text
						var threadNextMsgOffset = this.FindThreadNextOffset(msgHeader,
						                                                    keypressToThreadType(retObj.lastKeypress),
																			false);
						if (threadNextMsgOffset > -1)
						{
							retObj.newMsgOffset = threadNextMsgOffset;
							retObj.nextAction = ACTION_GO_SPECIFIC_MSG;
							continueOn = false;
						}
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
				case KEY_LEFT: // Previous message
					// TODO: Change the key for this?
					// Look for a prior message that isn't marked for deletion.  Even
					// if we don't find one, we'll still want to return from this
					// function (with message index -1) so that this script can go
					// onto the previous message sub-board/group.
					retObj.newMsgOffset = this.FindNextNonDeletedMsgIdx(pOffset, false);
					var goToPrevMessage = false;
					if ((retObj.newMsgOffset > -1) || allowChgMsgArea)
					{
						if (retObj.newMsgOffset == -1 && !curMsgSubBoardIsLast())
						{
							console.crlf();
							goToPrevMessage = console.yesno(this.text.goToPrevMsgAreaPromptText);
						}
						else
						{
							// We're not at the beginning of the sub-board, so it's okay to exit this
							// method and go to the previous message.
							goToPrevMessage = true;
						}
					}
					if (goToPrevMessage)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_PREVIOUS_MSG;
					}
					break;
				case KEY_RIGHT: // Next message
				case KEY_ENTER:
					// Look for a later message that isn't marked for deletion.  Even
					// if we don't find one, we'll still want to return from this
					// function (with message index -1) so that this script can go
					// onto the next message sub-board/group.
					retObj.newMsgOffset = this.FindNextNonDeletedMsgIdx(pOffset, true);
					// Note: Unlike the left arrow key, we want to exit this method when
					// navigating to the next message, regardless of whether or not the
					// user is allowed to change to a different sub-board, so that processes
					// that require continuation (such as new message scan) can continue.
					// Still, if there are no more readable messages in the current sub-board
					// (and thus the user would go onto the next message area), prompt the
					// user whether they want to continue onto the next message area.
					if (retObj.newMsgOffset == -1 && !curMsgSubBoardIsLast())
					{
						console.print("\1n");
						console.crlf();
						// If configured to allow the user to post in the sub-board
						// instead of going to the next message area and we're not
						// scanning, then do so.
						if (this.readingPostOnSubBoardInsteadOfGoToNext && !this.doingMsgScan)
						{
							// Ask the user if they want to post on the sub-board.
							// If they say yes, then do so before exiting.
							if (!console.noyes(format(this.text.postOnSubBoard, this.msgbase.cfg.grp_name, this.msgbase.cfg.description)))
								bbs.post_msg(this.subBoardCode);
							continueOn = false;
							retObj.nextAction = ACTION_QUIT;
						}
						else
						{
							if (console.yesno(this.text.goToNextMsgAreaPromptText))
							{
								// Let this method exit and let the caller go to the next sub-board
								continueOn = false;
								retObj.nextAction = ACTION_GO_NEXT_MSG;
							}
						}
					}
					else
					{
						// We're not at the end of the sub-board, so it's okay to exit this
						// method and go to the next message.
						continueOn = false;
						retObj.nextAction = ACTION_GO_NEXT_MSG;
					}
					break;
				case "F": // First message
					// Only leave this function if we aren't already on the first message.
					if (pOffset > 0)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_FIRST_MSG;
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
				case "L": // Last message
					// Only leave this function if we aren't already on the last message.
					if (pOffset < this.NumMessages() - 1)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_LAST_MSG;
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
				case "-": // Go to the previous message area
					if (allowChgMsgArea)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_PREV_MSG_AREA;
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
				case "+": // Go to the next message area
					if (allowChgMsgArea || this.doingMultiSubBoardScan)
					{
						continueOn = false;
						retObj.nextAction = ACTION_GO_NEXT_MSG_AREA;
					}
					else
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
					// H and K: Display the extended message header info/kludge lines
					// (for the sysop)
				case "H":
				case "K":
					if (gIsSysop)
					{
						console.crlf();
						// Get an array of the extended header info/kludge lines and then
						// display them.
						var extdHdrInfoLines = this.GetExtdMsgHdrInfo(msgHeader, (retObj.lastKeypress == "K"));
						if (extdHdrInfoLines.length > 0)
						{
							console.crlf();
							for (var infoIter = 0; infoIter < extdHdrInfoLines.length; ++infoIter)
							{
								console.print(extdHdrInfoLines[infoIter]);
								console.crlf();
							}
							console.pause();
						}
						else
						{
							// There are no kludge lines for this message
							console.print(this.text.noKludgeLinesForThisMsgText);
							console.crlf();
							console.pause();
						}
					}
					else // The user is not a sysop
					{
						writeMessage = false;
						writePromptText = false;
					}
					break;
					// Message list, change message area: Quit out of this input loop
					// and let the calling function, this.ReadMessages(), handle the
					// action.
				case "M": // Message list
					retObj.nextAction = ACTION_DISPLAY_MSG_LIST;
					continueOn = false;
					break;
				case "C": // Change message area, if allowed
					if (allowChgMsgArea)
					{
						retObj.nextAction = ACTION_C