VMS Help DSR, DSR Commands, .VARIABLE, Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 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.