@Ifb - If Blank Directive

Syntax

@IFB (arg) {block}

arg - An actual argument or dummy argument preceded by a "?"

block - A valid block of text

Use

@IFB includes the text contained within the block if the argument is blank (has 0 characters).

Examples

@IFB ()
{ text here will be included with the rest of the source file. }

@IFB ( hello )
{ this text will not be included }

@IFB (?A)
{ this text will be included if no value is substituted for A. }