	// Protocols for Box classes

	use_generic						( eq,			"=");
	use_generic						( ne,			"!=");
	use_generic						( scale,		"scale");
	use_generic						( translate,	"translate");

	def_visible_generic_debug_ok	( isEmpty,		"isEmpty");			
	def_visible_generic_debug_ok	( contains,		"contains");
	def_visible_generic_debug_ok	( rectify,		"rectify");
	def_visible_generic_debug_ok	( empty,		"empty");