This guide is designed to alert readers to the scope and variety of programming coming up. Listing is not meant to represent blanket endorsement. Viewers are urged to be selective. FRIDAY Elissa: A Tall Ship for Texas (PBS, 10-11 p.m.): The monumental effort of the people of Galveston to restore their link to the glorious age of sailing, filmed on location in Greece. SATURDAY
Bridge to Terabithia (PBS, 8-9 p.m.): Repeat of dramatization of children's book by Katherine Paterson about the special friendship of two 11-year-olds in a rural farming community. SUNDAY
The Galapagos (PBS, 8-9 p.m.): Premi`ere episode of three-part series that explores the tiny group of islands off the coast of Ecuador, where primitive animals run wild.
Something in Common (CBS, 9-11 p.m.): Ellen Burstyn and Tuesday Weld in a literate soap opera about a middle-aged mother whose 22-year-old son falls in love with a middle-aged woman.
The Christian Science Monitor Reports (check local listings for day and time): Examines Southern politics, a perennial battleground. MONDAY
The Making of a Continent (PBS, 9-10 p.m.): A reworking with added sequences of previously aired series exploring how all living things are shaped by an ever-changing Earth. First of six parts. TUESDAY
Election Coverage (CNN, 6 p.m.; CBS, 8 p.m; ABC, 9:30 p.m.; NBC, 10 p.m.): All networks will cover elections on evening news and interrupt regular programming for bulletins, in addition to continuing coverage listed above.
High-Tech Babies (PBS, 10-11 p.m.): ``Nova'' examines the advances -- and controversy -- involved in reproductive technology. WEDNESDAY
Discover: The World of Science (PBS, 8-9 p.m.): Monthly science magazine looks at the causes of avalanches and reports on aircraft emergency simulators, among other things.
Entrepreneurs (PBS, 9-10:30 p.m.): A composite portrait of the new business hero, focusing on five young American entrepreneurs.
Run for the Money (PBS, 10:30-11 p.m.): An ``Enterprise'' special examines how the Boston Marathon, America's oldest amateur athletic event, became big business. THURSDAY
Our World (ABC, 8-9 p.m.): Linda Ellerbee and Ray Gandolf recall the spring of 1954 in TV's most ``laid-back'' magazine show.
20/20 (ABC, 10-11 p.m.): In one of TV's liveliest magazine shows, Barbara Walters and Hugh Downs visit with Julie Nixon, who discusses her book about her mother. Listings are in Eastern Time; other zones may vary. Please check listings for all PBS programs, since local option often results in differing days and times.