con n.
[from SF fandom] A science-fiction convention. Not used of
other sorts of conventions, such as professional meetings. This
term, unlike many others imported from SF-fan slang, is widely
recognized even by hackers who aren't fans. "We'd been corresponding on the net for
months, then we met face-to-face at a con."
Node:condition out, Next:condom, Previous:con, Up:= C
=
condition out vt.
To prevent a section of code from being compiled by
surrounding it with a conditional-compilation directive whose
condition is always false. The canonical examples of these directives are
#if 0 (or #ifdef notdef, though some
find the latter bletcherous)
and #endif in C. Compare comment out.