SALE OF INSTRUCTIONAL CASSETTE TAPES AND RELATED PRODUCTS AND SERVICES INCLUDING THE SERVICE OF GIVING LIVE EDUCATIONAL INSTRUCTION ON SALESMANSHIP IN THE FENCE BUSINESS, SPECIFICALLY TO PRACTITIONERS OF THE FENCE INDUSTRY OR OTHERS SIMILARLY INTERESTED, AND IS SO DOING BY AND PLANS TO CONTINUE TO DO SO BY AFFIXING SAID MARK ON TAPE CASSETTE LABELS, BOOK COVERS, AND LITERATURE BY MEANS OF PRINTING AND PHOTOCOPYING