VMS Help MACRO, VAX MACRO Assembler, Directives, .IF TRUE FALSE (.IFTF)  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Starts a subconditional assembly block to be assembled regardless
    of whether  the  condition  test specified when the conditional
    assembly block was entered was true or  false.   The
    subconditional  assembly block  that  starts  with  .IF_TRUE_FALSE
    continues  up  to the next subconditional assembly directive or to
    the end  of  the  conditional assembly block.

      .IF_TRUE_FALSE

    The alternate form of .IF_TRUE_FALSE is .IFTF.