IFB              Assemble If Argument Is Blank                 MASM Directive
 
  IFB <argument>
  statements
  [ELSE
  statements]
  ENDIF
 
    Initiates a conditional block, causing assembly of statements up to
    the optional ELSE directive, provided argument is blank.
 
       Notes:     IFB and IFNB are usually used for conditional assembly
                  of macros based on the presence or absence of parameters
                  in the macro call.
 
                  Note that the angle brackets, <>, are required around
                  the argument.  The argument can be any name, number, or
                  expression.

Seealso:


 IFNB