In Wednesday's film notes column, actor Melvyn Douglas was erroneously referred to as "the late Melvyn Douglas." We regret the error and the apprehension it may have caused his many admirers. Douglas plans to attend the Feb. 5 Washington premiere here of his latest movie, "Twilight's Last Gleaming."

The world premiere of a new thriller called "Twilight's Last Gleaming" will be held Sunday, Feb. 6, in the Eisenhower Theater of the Kennedy Center as a benefit for the National Press Foundation. Director Robert Aldrich and several members of the cast, which includes Burt Lancaster, Richard Widmark, Charles Durning, Paul Winfield, Burt Young, Roscoe Lee Browne, Joseph Cotten and the late Melvyn Douglas, are expected to attend.

Derived from a novel by Walter Wager called "Viper Three," the film deals with an elaborate international extortion plot in which both Durning, as the President of the United States, and a nuclear device are being held for ransom. Local arrangements for the distribution company, Allied Artists, are being handled through Campbell & Peachy, an ad agency whose number is 821-3787. The film will open a regular theatrical engagement Wednesday, Feb. 9, at several area theaters.

Sheldon Tromberg's long-running "The Business of the Movie World," designed "for those who would like to consider the possibility of a career in the film world as a producer, distributor, critic, publicist, exhibitor, financier or even theater manager," resumes Tuesday, Feb. 15, at 7:30 p.m. at the Georgetown University Continuing Education Center in Rosslyn for seven weekly sessions. Tuition is $100.

Tromberg will also supervise a new course called "The Movies: Script to Cinema," meeting for seven Mondays at the same time, place and price beginning Feb. 14, Concentrating on a single new theatrical release, the course will attempt to detail the creation and manufacture of movies from start to finish. Prospective registrants may call 625-3001 for further information.

"The Marguise of O," Erich Rohmer's adaptation of the famous Kleist novella about a noblewoman's attempt to salvage her pride and honor when she discovers she has become pregnant from a source or sources unknown, is scheduled to open the same day at units of the K-B Cerberus and Studio. The German cast is led by Edith Clever as the Marquise and Bruno Ganz as her admiring remorseful ravisher.

"F is for Fake," Orson Welles' first release in several years, a divertissement on the nature of illusion and reality that includes scenes from a vintage interview of Elmyr de Hory by Clifford Irving originally shot by Francois Reichenbach, opens at the K-B Janus on Wednesday, Jan. 26, following two special showings at the American Film Institute Theater on Sunday, Jan. 23.

The opening date for Alain Tanner's "Jonah Who Will Be 25 in the Year 2000," a marvelous social comedy about the survival techniques among a circle of utopians and disappointed political radicals, has been advanced to Wednesday, Jan. 19, at the Dupont Circle, Tanner and his co-writer, John Berger, recently won the best screenplay award of the National Society of Film Critics.

A number of new and revived courses in movie history, appreciation or production begin within the next few weeks. The AFI's latest "Rediscovery" program will be taught by Joel Siegel, whose topic is "Style and Emotion: Five Directors," a 13 week survey of the work of Max Ophuls, Robert Bresson, Claude Chabrol, Douglas Sirk and Rainer Werner Fassbinder. Among the pictures scheduled to be shown are "The Earings of Madame de . . .," "Letter from an Unknown Woman," "Diary of a Country Prest," "Mouchette," "Les Bonnes Femmes," "Le Boucher," "Tarnished Angels" and "Ali." Subscription tickets are available at $25 for students and AFI members and $35 for non-members. After the opening session on Tuesday, Jan. 18, the course will continue each Wednesday at 6:30 p.m. For further information, call 785-4600.

The Smithsonian Resident Associates have announced two film course for the winner term, Margot Kernan's "Celluloid Memory: The American Documentary Film" and Martin Williams'" "Film Classics and Curios." The former meets Monday, Jan. 17, for the first of 10 weekly sessions; the later run for eight weeks beginning Tuesday, Jan. 18.

"Celluloid Memory" will trace the development of documentaries from World War I through the war in Vietnam. Some of the more famous works scheduled to be shown include Robert Flaherty's "The Land," Pare Lorentz's "Fight for Life," William Wyler's "Memphis Belle," John Huston's "The Battle of San Pietro" and the TV documentaries "Crisis" and "Sixteen in Webster Groves." The course fee for members is $45, the fee for non-members $63.

"Classics and Curios" is described as a "potpourri of famous, infamous and oft-forgotten films," beginning with "Intolerance" and including such personalities as Buster Keaton, Laurel & Hardy, W.C. Fields and Betty Hutton. The fees are $36 and $54 for members and non-members, respectively. For further information, call 381-5157.

Dorian Walker Productions is offering a seven-week course in documentary filmmaking taught by John Simmons. The first of the intensive four hour sessions, limited to eight students, meets Monday, Jan. 17. Tuition is $190. Those interested is applying should call 452-1776. The short film "Prophet of Freedom," included in the Biograph's "Expose Yourself" program and awarded a bronze medal at the Virgin Islands Film Festival, grew out of the last course.