id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
81	add support for type ids	Stephen Siegel	Stephen Siegel	Add methods to type factory so that every type gets a unique id number.    Add method to return type of given id, and method id() to TypeIF to return id of a type.   Add method to factory to iterate over all types.	enhancement	closed	major		model	1.0	fixed	type, id