David Chord wrote in a message to Alex Vasauskas:
 AV> I want to use keys to lock out individual users from
 AV> specific echomail conferences.  For example, to lock out
 AV> a user from the WRITING conference I would like to be able
 AV> to indicate in my msgarea.ctl file that access in the WRITING
 AV> conference is restricted to users *not having* all of the keys W
 AV> and R and I. 
 DC> Why not just use the key's C and W?
Because I have several echoes that begin with the same letter.
E.g. in addition to WRITING there is WUNDERMENT, A's include
ALTMED and ARCHERY, etc.
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