SUPER-MEMO WORLD'S DISCOUNT SYSTEM
                        July 26, 1991

Any SuperMemo World's customer becomes a registered user at the
moment of his first purchase in the company.

              COMMISSION FOR ENROLLING NEW USERS

At registration, the customer may indicate any other registered user
as the source of his recommendation to buy SuperMemo World's products
and thus make him/her entitled to obtain a 20% commission.
A registered user will receive a 20% commission on all purchases
resulting from his direct recommendation (commissions will be sent
only after they add up to more than $10).
Commissions are calculated on the base of SuperMemo World's net profit,
not the product price.

                DISCOUTS FOR REGISTERED USERS

All registered users can benefit from the SuperMemo World's registered
user discount system. See the sales offer for discount details.

                QUANTITY PRICES

Some of the SuperMemo World's products may be purchased at wholesale
prices. See the sales offer for details.

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       SUPER-MEMO WORLD
       Os Przyjazni 15-165
       61-688 Poznan
       POLAND
       tel (48) 61 203157