<programming, command, humour> (FLI) /FLY/ A joke assembly
language instruction first documented in the late 1970s in
"The Hackers Dictionary".
The FLI instruction was frequently referred to by engineers
when minicomputers such as the DEC PDP-8, PDP-11 and
some early microcomputers such as the IMSAI and Altair
had dozens of front panel lights.
"When the computer is about to do some long I/O operation,
stick in a FLI so the accountants won't think the machine has
hung again."