Succinctly put, ""football is very much a game of adjustment. Winning frequently depends on perceiving what the opposition is doing and reacting correctly."" And no matter what the play, ""execution is everything."" Among the plays discussed, diagramed and/or illustrated here are the Packers' dependable power sweep; the bootleg; play-action passes; the Miami Dolphins' invincible ""53 Defense""; the razzle-dazzling flea-flicker play; and the zone defense (you need a Namath to pierce it). You'll recognize the players Csonka, Simpson and Plunkett. . . relive some Super Bowl highlights. . . and have a look at electronic (computer) football. Informative though not the most exciting of game plans.