1.   Family advocacy groups, however, argue that pornography is proliferating on the Internet.

2.   Last week, most television networks began using the additional letters, fulfilling an agreement reached in July with a coalition of family advocacy groups.

3.   Leaders of family advocacy groups say the best defense against domestic violence often is to leave the relationship.

4.   Martha A. Matthews, director of the family advocacy program at Stanford University Law School, said welfare recipients would have more difficulty asserting such claims now.

5.   Negotiators for the television industry and family advocacy groups agreed to delay an announcement until a session at the White House scheduled for noon Thursday.

6.   Those definitions were set by a group representing both the television industry and the family advocacy groups.