VMS Help PASCAL, Attributes, VALUE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The VALUE attribute causes the variable to be a reference to  an
  external  constant  or  to  be  the  defining  point of a global
  constant.

  See the  "Compaq  Pascal  Language  Reference  Manual"  for  the
  complete description of using the VALUE attribute.