Date   : Sat, 04 Aug 1984 09:17:00 MDT (Sat)
From   : Keith Petersen <W8SDZ@Simtel20.ARPA>
Subject: MDM7xx doesn't eat ESC characters

The problem of MDM7 "eating ESC characters" (in the terminal mode) is
caused by the way you have an option set in the user overlay.  Look
for an equate which says it will "filter out" control characters.
Change it so it does not do that.  This option was put in for people
who had problems with noisy phone lines and wanted a measure of
protection against funny things happening to their terminals.  When
you change the equate, you'll get the full range of characters and
EMACS and other cursor-oriented software on your mainframe will work
properly.  It's too bad that almost all of the overlays were
distributed with the equate set to filter out control characters -
this has caused a lot of unnecessary head-scratching and some people
even quit using MDM7 because they thought there was something wrong
with the terminal mode when they couldn't use EMACS.
--Keith