                                                                set_exclude 
Chapter 13 Set and Criteria Selection

The set_exclude command compares two sets, s1 and s2, and determines which
objects are in set s1 but not in set s2 and stores them in set s3.

set_exclude

    Stores objects in s1, but not in s2, into s3.

         set_exclude s1 s2 s3 [str]

    Finds all elements of set s1 which are not in set s2 and stores the result
    in set s3.  Any data already in set s3 will be overwritten.
*   The set created (s3) 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 [result set elements must be in s1]
         s2        Input set [result set elements must not be in s2]
         s3        Destination set
         [str]     Set descriptor (user input), optional
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    Example(s):

    To perform an exclusion on set cub_s1 with cub_s2 and store the results in
    cub_s3, enter:
     
         set_exclude cub_set1 cub_set2 cub_s3
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    See also:

              set_clear, set_comp, set_intrsec, set_union
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