Set Constructor

set-type "{" expr-1 "," ... "," expr-n "}"

A set constructor is an set-valued expression. set-type may be any set type (see section Set Types). The expressions expr-1.. expr-n must be expressions that evaluate to elements of the set's base type. An expr may also be of the form lo..hi, as a shortcut for including several values.

Example

CONST 
  Letters = SET OF CHAR {'A'..'Z', 'a'..'z'};
VAR
  punctuation: SET OF CHAR := SET OF CHAR {'.', '!', ',', ';', '?'};