VMS Help PRODUCT, SHOW, HISTORY, Qualifiers, /VERSION  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /VERSION=(version-number[,...])

    Selects software products that have the specified version.

    Parentheses (())  are optional only when you specify one version
    number. They are required when you specify more than one version
    number.