| http://www.w3.org/ns/prov#value | - For example, a parent can purchase an access code 150 that allows games to be played only at certain times of the day and/or on certain days of the week. [0071] Of course, rental services of this kind are not limited to games but can extend to all other forms of software and software packages, to music rental, film rental and so forth. [0072] The use of a clock 50 also allows licensors to offer an
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