Prev: WEB macros Up: Macros Top: Top FWEB preprocessor commands may appear in either the definition or the code parts. But BEWARE: No matter where they appear, they are expanded during INPUT, not output. (This is probably a design flaw.)
@#define identifier --- Define a WEB macro; equivalent to `@m'.
@#undef identifier --- Undefine a WEB macro.
@#ifdef identifier --- Is WEB macro defined? Equivalent to
`@#if defined identifier'.
@#ifndef identifier --- Is WEB macro not defined? Equivalent to
`@#if !defined identifier'.
@#if expression
@#elif expression
@#else
@#endif