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green card
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green card /n./ [after the "IBM System/360 Reference
Data" card] A summary of an assembly language, even if the color is
not green. Less frequently used now because of the decrease in the
use of assembly language. "I'll go get my green card so I can
check the addressing mode for that instruction." Some green cards
are actually booklets.
The original green card became a yellow card when the System/370
was introduced, and later a yellow booklet. An anecdote from IBM
refers to a scene that took place in a programmers' terminal room
at Yorktown in 1978. A luser overheard one of the programmers
ask another "Do you have a green card?" The other grunted and
#0 turned a delicate shade of olive and rapidly left the room, never
to return.
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