Related:

• RTI: /R-T-I/ interj. The mnemonic for the `return from interrupt' instruction on many computers including the 6502 and 6800.
  The variant `RETI' is found among former Z80 hackers (almost nobody programs these things in assembler anymore)....
• POPJ /pop'J/ n.,v. [from a PDP-10 return-from-subroutine instruction] To return from a digression.
  By verb doubling, "Popj, popj" means roughly "Now let's see, where were we?" See RTI....
• POPJ: /pop'J/ [from a {PDP-10} return-from-subroutine instruction] n.
  v. To return from a digression. By verb doubling, "Popj, popj" means roughly "Now let's see, where were we?...
• ACK: /ak/ interj. 1. [from the ASCII mnemonic for 0000110] Acknowledge.
  Used to register one's presence (compare mainstream *Yo!...
• SEX /seks/ [Sun Users' Group & elsewhere] n.
  1. Software EXchange. A technique invented by the blue-green algae hundreds of millions of years ago to speed up their evolution, which had been terribly slow up until then....
• ap: 1. n. A program interrupt, usually an interrupt caused by some exceptional situation in the user program.
  In most cases, the OS performs some action, then returns control to the program....
• NAK: /nak/ [from the ASCII mnemonic for 0010101] interj.
  1. On-line joke answer to {ACK}?: "I'm not here....
• ap 1. n. A program interrupt, usually an interrupt caused by some exceptional situation in the user program.
  In most cases, the OS performs some action, then returns control to the program....
• alk mode n. A feature supported by Unix, ITS, and some other OSes that allows two or more logged-in users to set up a real-time on-line conversation.
  It combines the immediacy of talking with all the precision (and verbosity) that written language entails....