/T/ 1. [from LISP terminology for `true'] Yes. Used in
reply to a question (particularly one asked using the `-P'
convention). In LISP, the constant T means `true', among other
things. Some hackers use `T' and `NIL' instead of `Yes' and `No'
almost reflexively. This sometimes causes misunderstandings. When
a waiter or flight attendant asks whether a hacker wants coffee, he
may well respond `T', meaning that he wants coffee; but of course
he will be brought a cup of tea instead. As it happens, most
hackers (particularly those who frequent Chinese restaurants) like
tea at least as well as coffee --- so it is not that big a problem.
2. See time T
(also since time T equals minus infinity
3. [techspeak] In transaction-processing circles, an abbreviation
for the noun `transaction'. 4. [Purdue] Alternate spelling of
. 5. A dialect of LISP
developed at Yale.