The specification for LSET-DIFF+INTERSECTION begins

# Returns two values - the difference and the union of the lists.

        The word `union' should be `intersection'.

--
======  John David Stone - Lecturer in Computer Science and Philosophy  =====
==============  Manager of the Mathematics Local-Area Network  ==============
==============  Grinnell College - Grinnell, Iowa 50112 - USA  ==============
==========  xxxxxx@math.grin.edu - http://www.math.grin.edu/~stone/  =========