Version 1.17 beta 47: Updated to set the message  number field length dynamically based on the number of messages in the sub-board.  It will be at least 4 but can be more than 4 if there are 10000 messages or more  in a sub-board.  Also, updated to not hold an open sub-board for a long period of time - It now opens a sub-board only when necessary.  This simplified the code a bit.  I also hoped it would fix issues I've seen where sbbs crashes sometimes when replying to a message, but it looks like it did not fix that.