24. An apparatus according to claim 22 wherein said suspect expression modification comprises means for identifying said modified expression as a potentially valid linguistic expression.
24. An apparatus according to claim 22 wherein said suspect expression modification comprises means for identifying said modified expression as a potentially valid linguistic expression. 25. An apparatus according to claim 24 wherein said suspect expression modification means comprises means for generating a linguistically salient word skeleton of said modified suspect expression, and further comprises binary search means for identifying a candidate master lexicon block likely to contain an entry representing an expression matching said modified suspect expression.