    class
    	COMPARATOR_BUILDER_IMPL

    General
    	cluster: transfer
    	description: "Implementation of comparator builder"
    	create: make

    Ancestors
    	ANY
    	ASCII

    Queries
    	comparators: LINKED_SET [COMPARATOR]
    	comparators_available: BOOLEAN
    	is_set_defined: BOOLEAN

    Commands
    	add (s: STRING_8)
    	build
    	define_set (s: STRING_8)
    	remove (s: STRING_8)

    Constraints
    	character array set up
    	comparators set up
    	token valid