/OUTPUT[=filespec]
       /NOOUTPUT

    Specifies the file to which the display is written (default is
    SYS$OUTPUT). The asterisk (*)  and the percent sign (%) wildcard
    characters are not allowed in the file specification. If you
    enter the /OUTPUT qualifier with a partial file specification
    (for example, specifying only a directory), SHOW is the default
    output file name and .LIS the default output file type.

    If you enter the /NOOUTPUT qualifier, output is suppressed.