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.
: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 AI Hackers Dictionary