K 10 svn:author V 4 roam K 8 svn:date V 27 2001-12-27T13:33:10.000000Z K 7 svn:log V 160 Fix a typo. While 'iff' might make sense in a mathematics-related text, 'if and only iff' does not. PR: 33242 Submitted by: Eric Yu END