the beginning of a SAUCE record and the end of very old MS-DOS text files.
Added support for ESC[1;1f/H (home cursor) and ESC[0J (clear to EOS) sequences
(converted to the equivalent in Ctrl-A codes).
Output Ctrl-A characters in uppercase, as they were documented and as is
common practice.
Covert ESC[xB and ESC[xD to the appropriate Ctrl-A sequences rather than
converting to ASCII ctrl chars (CR, LF, BS).