Next: WHILE - Conditionally loop over a Template Block, Previous: SELECT - Selection block for CASE function, Up: AutoGen Native Macros [Contents][Index]
The macro text has started with a name not known to AutoGen. If, at run time, it turns out to be the name of a defined macro, then that macro is invoked. If it is not, then it is a conditional expression that is evaluated only if the name is defined at the time the macro is invoked.
You may not specify UNKNOWN explicitly.