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From: carl@CITHEX.CALTECH.EDU.UUCP
Newsgroups: comp.os.vms
Subject: Re: SET BROADCAST
Message-ID: <870906221417.08e@CitHex.Caltech.Edu>
Date: Mon, 7-Sep-87 01:23:04 EDT
Article-I.D.: CitHex.870906221417.08e
Posted: Mon Sep  7 01:23:04 1987
Date-Received: Tue, 8-Sep-87 01:37:31 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 14


 > While looking at the help file for SET BROADCAST, I noticed a set of
 > parameters [NO]USER1-[NO]USER16.  After experimenting, I discovered that
 > setting NOUSER1 stopped anyone from using the SEND command on me (no more
 > interrupted editing sessions) while setting NOUSER2 stopped the same from
 > remote nodes.  Unfortunately, no one here, even after looking through
 > several tons of orange binders, can figure out what the rest of the USERxx
 > parameters do.  Anybody know?

Look on pages SYS-31 and SYS-32 of the SYSTEM SERVICES manual.  Here it
defines the classes of broadcast messages.  In particular, classes USER1
through USER16 are defined as: These class names can be used by user-written
images.  Apparently JNET from Joiner Associates uses classes USER1 and USER2
as you've described.  The other 14 classes may be unused on your system.