VMS Help PASCAL, Data Types, Ordinal, Enumerated  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  An enumerated type is a user-defined  ordered  set  of  constant
  values specified by identifiers.

  Syntax:

     ({enumerated-identifier},...)

  The 'enumerated-identifier' is an identifier of  the  enumerated
  type  being  defined.   Compaq Pascal allows a maximum of 65,535
  identifiers in an enumerated type.

  The values of an enumerated type begin  with  the  value  0  and
  follow  a  left-to-right  order.   Subsequent identifiers have a
  value one greater than the identifier preceding it.

  Example:  X : ( Spring, Summer, Fall, Winter )

  In this enumerated type, Spring (value 0) and Summer  (value  1)
  are  less  than  Fall (value 2) because they precede Fall in the
  list of constant values.  Winter (value 3) is greater than  Fall
  because it follows Fall.

  An identifier in an enumerated type cannot be  defined  for  any
  other purpose in the same block.