PM> DOORWAY mode is used primarily on BBS's that uses Marshall Dudley's
 PM> doorway program for running doorway games, drop to dos etc.
It's used any time you need to send the keyboard codes which Telix
will otherwise intercept and use for its own purposes, such as PgUp
-- when you want to send PgUp instead of telling Telix you want to
upload something.  It's got nothing to do with the doorway program,
per se; and it might not even be necessary to use doorway mode when
in DOS via a bbs door.  Whether or not to use it depends entirely on
whether or not you need to send unfiltered key codes out through the
COM port.
--- Blue Wave v2.12
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