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HELP FLUSH Aaron Sloman Sept 1979 This procedure takes one argument, a pattern, and removes all items in the database which it matches. Thus, it could be defined something like this: define flush(pattern); while present(pattern) do remove(it) endwhile enddefine; Unlike REMOVE, FLUSH does not cause a mishap if it doesn't find a matching item in the database. If differs further from REMOVE in that it deletes ALL matching database entries. E.g.  -> database; add([i like fish]); add([i like fruit]); database => ** [[i like fruit] [i like fish]]) flush([i like ==]); database => **  See also HELP * ADD, *PRESENT, *LOOKUP, *REMOVE, *DATABASE.