Business: Xerox U.

TRAINING As a hard-driving boss who built a small shoemaking firm into an apparel and retailing combine with annual sales of $872 million, Genesco Chairman W. Maxey Jarman can fairly claim to be a business expert. Yet Jarman is going back to school. He recently struggled to jot down answers to questions on a long series of statements, spoken in everything from pure Bronx to a Southern drawl, on a tape recording prepared by the Xerox Corp. "I thought I was a pretty good listener," Jarman said after sampling the 21-hour session....