The .VARIABLE command allows you to specify a character that
    corresponds to the name you have given the commands and text in
    an .IF (or .IFNOT) block. This identifying character is placed
    in the left margin when you process your file with the /DEBUG or
    /DEBUG=CONDITIONALS command line qualifier.

    Format

      .VARIABLE  name [t ,f]

    Abreviated format

      .VR name  [t ,f]

1  –  Parameters

 name

    The name you have given to the commands and text in an .IF (or
    .IFNOT) block.

 t

    (True) is a single character of your choice that appears in front
    of lines of text to indicate that they will be processed (.IF
    block) if you specify /VARIANT, instead of /DEBUG, in the command
    line.

 f

    (False) is a single character of your choice that appears
    in front of lines of text to indicate that they will not be
    processed (.IFNOT block) if you specify /VARIANT, instead of
    /DEBUG, in the command line.