This episode's headline: Newsmaker; Breaking the Code; Debating Dr. Laura. ANCHOR: JIM LEHRER; GUESTS: LUCY DALGLISH, Reporters Committee for Freedom of the Press; JOAN GARRY, Gay & Lesbian Alliance Against Defamation; KEVEN BELLOWS, Dr. Laura Schlessinger Program; CORRESPONDENT: SPENCER MICHELS, STEVEN ERLANGER; MARLA PRATHER, Whitney Museum of American Art; CARROLL JANIS, Former President, Sidney Janis Gallery; CORRESPONDENTS: TIM ROBBINS; TERENCE SMITH; BETTY ANN BOWSER; SUSAN DENTZER; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; LEE HOCHBERG; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN