CONST identifier [ ":" type ] "=" constant-expression ";"
Use constant declarations to give names to compile-time values.
Here are some examples:
CONST
  MaxValue: INTEGER = 5 * (25 - 3);       (* INTEGER *)
  MinValue = 2;                           (* INTEGER *)
  RangeValue = MaxValue - MinValue + 1;   (* INTEGER *)
  Name = "Arnie Shoestring";              (* TEXT *)
  Caps = SET OF CHARACTER{'A'..'Z'};      (* SET OF CHARACTER *)