Regarding SWAP:
    See notes on the origins of this program in first
    part of SWAP.ASM

    This is a TSR that can swap 192K of a current program
    to disk and load another program.  Then on exit it
    restores the original program.

    It is most interesting as an extension of the Danish
    TSR writing example called TSRDEMO2.ZIP on Channel 1
    (Boston BBS).

    Found it to be incompatible with Cterp -- if I used
    ALT right shift in Cterp -- a message blinked saying
    invalid command or file name, if I shelled to DOS
    and used ALT right shift, I did get prompt to enter
    program name, the new program swapped in, but then in
    leaving, I did not see prompt that said Press any Key
    to Continue, but worse, when Cterp came back in, the
    second monitor blinked and the system locked up.

    Otherwise the program works fine.