con = C = condom

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.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.

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