VMS Help DEFINE, /FORM, Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 form-name

    Assigns a name to the form being defined. The form name can
    be the name of an existing form type or a string of 1 to 31
    characters that defines a new form type. The character string can
    include any uppercase and lowercase letters, digits, the dollar
    sign ($),  and the underscore (_), and must include at least one
    alphabetic character.

 form-number

    Assigns a number in the range 0 to 9999 to the form being
    defined. The DEFAULT form, which is defined automatically when
    the system is bootstrapped, is assigned number zero.