                                                                set_comp
Chapter 13 Set and Criteria Selection

The set_comp command will determine the complement of named set s1 (i.e., all
of the objects which are not in set s1) and store them in set s2.

set_comp

    Stores the complement of s1 into s2.
     
         set_comp s1 s2 [str]

    Takes the complement of a set and places the result in s2, and allows the
    user to tag the new set with a descriptor string.  Any data stored
    previously in set s2 will be overwritten.
*   The set created (s2) will be highlighted automatically, and the number of 
*   objects, total length/perimeter in miles, and total area in acres will
*   be displayed on the command line area.
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    Options/arguments:

         s1        Input set
         s2        Destination set; complement of set s1
         [str]     Set descriptor (user input), optional
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    Example(s):

    To take the complement of a set called cub_set1 and store it in a set
    called cub_set2, enter:

         set_comp cub_set1 cub_set2
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    See also:

              set_clear, set_exclude, set_intrsec, set_union
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