SALESMAN'S GUIDE, RULE 2: The modern 1995 customer who enters Tracy's Department Store is not always right, but as far as you are concerned, he is. he little green cue light blinked three times. Trevor Anson arranged his tie at just the nattily precise angle, waved his hand before a hidden lighting-effect switch in the smooth marble pillar at the entrance to the display room, and faced the elevator. This would be a "green light" customer—a first-time prospect, and three blinks indicated a very