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

  A TYPE section introduces the name  and  set  of  values  for  a
  user-defined  type  or  schema  definition  and  has  one of the
  following forms:

  Syntax:

     TYPE
        {type-identifier = [[attribute-list]] type-denoter}
           [[VALUE initial-state-specifier]];...

     TYPE
        {schema-declaration} [[VALUE initial-state-specifier]]

  The 'type-identifier'  is  the  identifier  of  the  type  being
  defined.

  The 'attribute-list' is one or more  optional  identifiers  that
  provide additional information about the type-denoter.

  The 'type-denoter' is any legal Pascal type syntax.

  The 'schema-declaration' is the declaration of a schema type.

  The 'initial-state-specifier' is a compile-time expression  that
  is  assignment compatible with a variable of the TYPE identifier
  being defined.  Compaq Pascal initializes all variables declared
  to  be  of  this type with the constant value or values provided
  (unless there is an overriding initial-state  specifier  in  the
  variable declaration).

  Pascal requires that all user-defined type  identifiers  (except
  base  types  of pointers) be defined before they are used in the
  definitions of other types.  A base type must be defined  before
  the end of the TYPE section in which it is first mentioned.

  Example:

     TYPE
        Entertainment = ( dinner, movie, theater, concert );
        Week_end = ( sat, sun ) VALUE sat;
        Hours_worked = ARRAY[mon .. fri] OF INTEGER;
        Salary = ARRAY[1 .. 50] OF REAL;
        Salary_template( upper_bound : integer ) =
           ARRAY [1..upper_bound] of REAL;
        Pay = salary;
        Ptr_to_hits = ^Hits;
        Hits = RECORD
                  Title, Artist, Composer : VARYING[30] OF CHAR;
                  Weeks_on_chart : INTEGER;
                  First_version : Boolean;
                  END;

     VAR
        Week1, Week2 : Week_end;
        Week3 : Week_end VALUE sun;
        Salary_type2 : Salary_template( x );

  In this example, 'Week1' and 'Week2' have initial values of sat,
  as  specified in the TYPE definition of 'Week_end'.  'Week3' has
  an initial value of sun, because an initial value  specified  in
  the  variable  declaration overrides any initial value specified
  in the type definition.  The 'Salary_template' schema has actual
  discriminants  of  x, which indicates that the upper boundary of
  'Salary_type2' will be determined at run time by a  variable  or
  function call.