| http://www.w3.org/ns/prov#value | - Also, in addition too, or in place of, the use of logic A-D to key the queues, category-type queues may be keyed by various external factors identified by the system, such as time of day or season. [0172] The present invention has been described by way of specific exemplary embodiments, and the many features and advantages of the present invention are apparent from
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