    deferred class
    	PART_COMPARABLE

    General
    	cluster: base
    	description: "Objects that may be compared according to a partial order relation"

    Ancestors
    	ANY

    Queries
    	infix "<" (other: [like Current] PART_COMPARABLE): BOOLEAN
    	infix "<=" (other: [like Current] PART_COMPARABLE): BOOLEAN
    	infix ">" (other: [like Current] PART_COMPARABLE): BOOLEAN
    	infix ">=" (other: [like Current] PART_COMPARABLE): BOOLEAN