;FNC Hlp
Most Sapphire display commands (such as FILES, READ, etc.) don't show you
everything; they show you what's NEW.  After all, that's what you usually
want to see.  The SET command changes the behaviour of the display commands
so you can see things you have seen before, or skip some things so that
you start looking at a more recent day#.

;8
;FNC Fil
-  A "Temporary  SET" will not change the system's memory of what you have
   seen.  Use it if you simply want to briefly look back -- for example, to
   re-read a few old messages or check on some old files.

-  "Hard SET" changes the system's memory.  You are saying, in effect,
   "I am not interested in what happened before such-and-such a day#."  You
   might do this if you have been away for a while and you only want to see
   the last 3 days worth of files and messages.

;4
;FNC Hlp
SET can be used to modify almost any display command:  READ, FILES,
MESSAGES, OBSERVE, USERS and so on.  For example, if you temporarily SET
back 3 days then do an OBSERVE, you can see who has visited in the past
three days.

;6
SET is especially powerful when used with the NAMES and TEXT commands.  If
you temporarily SET back 7 days, set NAMES to FRED/MARY and TEXT to
CABBAGE/KINGS, then enter the MESSAGES command, you will see a list of the
past week's messages from Fred or Mary in which the summary line mentions
roughage or royalty.
