factor

Author	SHA1	Message	Date
John Benediktsson	1987deb359	Fix M: stack effects.	2011-10-13 16:41:17 -07:00
Joe Groff	06eeedcb4c	change-tracking-tuple class. subclasses will have a "changed?" slot that gets set to true when any slot is modified	2009-07-31 21:48:17 -05:00