Readers and Corrections This week marks the one-year anniversary of The Times's decision to divide corrections into two groupings on Page A2, a change that had been advocated by readers and the previous public editor.

A20 Anti-abortion protesters marched in Washington to mark the 17th anniversary of the Supreme Court's decision to legalize abortion.

They hope to inspire a march on Washington next April 27, the anniversary of Mr. Kerik's decision.

LEAD: Both sides of the abortion debate are preparing activities for tomorrow to mark the 14th anniversary of the Supreme Court's decision legalizing abortion.

THIS season marks the 20th anniversary of Kareem Abdul-Jabbar's decision to pull up stakes in Milwaukee and move west to Los Angeles.

Tuesday marks the 40th anniversary of the Court's decision in Holmes v. Atlanta, the case that desegregated public golf.

Feminists for Life's "Women Deserve Better" campaign was launched in 2003 on the 30th anniversary of the U.S. Supreme Court's 1973 Roe v. Wade decision.

The anniversary of the Supreme Court's decision is indeed cause for celebration, with lasers, symphonies, the works.

This year marks the 100th anniversary of the Supreme Court's decision in Muller v. Oregon.

That is one of the few conclusions that can be drawn from the surveys of public opinion accompanying the anniversary of the Supreme Court's 1973 decision striking down almost all existing legal restrictions on abortion.