CA vs CF key definition

[Buck Calabro <Buck.Calabro@xxxxxxxxxxxx>]

>Can someone explain any sort of rational reason for the 
>existence of the CA selection?  

Back in the day when 4800bps modems were The Thing, you'd do anything to
keep the transmission sizes down.  We always used PUTOVR instead of
re-sending the whole screen and we never used CF for an exit key.  Why read
the whole screen into the program if all you're going to do is throw that
data away and exit?

Sending small datastreams meant that we could support 5 remote offices, each
with 6 to 8 terminals and a printer on a single 4800bps multipoint circuit.

Buck Calabro
Commsoft; Albany, NY
Visit the Midrange archives and FAQ at http://www.midrange.com
"...the humourous man shall end his part in peace..."
  -- Hamlet Act II, scene ii
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