◄Up► ◄Contents► ◄Index► ◄Back► ──────────────────────────────────────────────────────────────────────────── Syntax: [ELSE]IFB expression [ELSE]IFNB expression See also: Conditional Assembly Directives, Relational Operators, .ERRB, .ERRNB, MACRO Description: IFB causes assembly of a block of statements if <expression> is blank. IFNB causes assembly of a block of statements if <expression> is not blank. The <expression> field is any name, number, or expression; typically, it is the name of a parameter of a macro. See: ◄IF Block Syntax► Within a macro, a parameter name is replaced by an empty string if you call the macro without giving a corresponding argument. IFB and IFNB let you define default behavior when an argument is missing, but the :REQ and :=default MACRO parameters are preferred. -♦-