16. A system for enhancing information search queries for information retrieval by computer in claim 15 , further comprising means for requiring a passive or active acceptance or specification of a TUSA of the information search query from among the primary TUSA and the alternative TUSAs.
15. A system for enhancing information search queries for information retrieval by computer in claim 10 , further comprising means for automatically identifying alternate TUSAs corresponding to the information search query and ranking the primary TUSA and the alternate TUSAs by expected relevance to the information search query.