parid0321 | Sat, 22 Feb 2003 15:22:50
What is this doing for me that parid0311">parid0311 is not? (Oddly, parid0311">parid0311 uses "constraints" in its title, and "validity constraints" in its prose.)
parid0321 | Sat, 01 Mar 2003 16:30:41
Definitions of validity constraints on the values of properties
see comments on parid0322