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Text File  |  1992-12-17  |  405 b   |  10 lines
  1.  
  2.  
  3.           intersect3 lista listb
  4.                Intersects two lists, returning a list containing three
  5.                lists:  The first list returned is everything in lista
  6.                that wasn't in listb.  The second list contains the
  7.                intersection of the two lists, and the third list
  8.                contains all the elements that were in listb but
  9.                weren't in lista.
  10.