Conditional Behavior

You can use the evaluator with the various @if and @ifset command modifiers to introduce simple conditional behavior in functions.

Note that these modifiers can also be used without the evaluator, so to use the evaluator you must begin the expression with a = character.

The return value from the evaluation expression will be used to determine the result of the condition. Return true if the lines following the modifier should be executed, or false to skip to the next @if / @ifset modifier.