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

  $ DEFINE/FORM /MARGIN=(TOP=6,LEFT=10) CENTER 3

      The DEFINE/FORM command in this example defines the form CENTER
      to have a top margin of 6 and a left margin of 10. The defaults
      remain in effect for both bottom margin (6) and right margin
      (0). The form is assigned the number 3.