VMS Help MACRO, VAX MACRO Assembler, /SHOW  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SHOW[=(function[,...])]
       /NOSHOW[=(function[,...])]

    Provides initial settings for the functions controlled by the
    assembler directives .SHOW and .NOSHOW.

    You can specify one or more of the following functions:

    CONDITIONALS  Lists unsatisfied conditional code associated with
                  .IF and .ENDC MACRO directives.
    CALLS         Lists macro calls and repeat range expansions.
    DEFINITIONS   Lists macro definitions.
    EXPANSIONS    Lists macro expansions.
    BINARY        Lists binary code generated by the expansion of
                  macro calls.

    If you specify more than one function, separate each with a
    comma and enclose the list in parentheses. If you specify
    no functions in the /SHOW qualifier, it increments the
    listing level count; the /NOSHOW qualifier decrements the
    count in similar circumstances. Because these qualifiers
    contribute to the listing file, you must also specify the
    /LIST qualifier when you use them. If you do not specify
    the /SHOW qualifier, the MACRO command assumes a default of
    /SHOW=(CONDITIONALS,CALLS,DEFINITIONS). If you specify only one
    function, you can omit the parentheses.