class
	CHARACTER_SET

General
	cluster: transfer
	description: "Comparator for character sets"

Ancestors
	TO_SPECIAL [T]

Queries
	area: SPECIAL [BOOLEAN]
	contains_character (c: CHARACTER_8): BOOLEAN
	contains_string (s: STRING_8): BOOLEAN
	infix "@" (i: INTEGER_32): BOOLEAN
	is_empty: BOOLEAN
	item alias "[]" (i: INTEGER_32): BOOLEAN
	valid_index (i: INTEGER_32): BOOLEAN

Commands
	add (s: STRING_8)
	define (s: STRING_8)
	put (v: BOOLEAN; i: INTEGER_32)
	remove (s: STRING_8)