NAME 
       OrRectRegion -- Perform 2d OR operation of rectangle
                       with region, leaving result in region.

   SYNOPSIS 
       status = OrRectRegion(region,rectangle)
         d0                    a0      a1

        bool orrectregion( struct region *, struct rectangle * );

   FUNCTION 
       If any portion of rectangle is not in the region then add
       that portion to the region.

   INPUTS 
       region - pointer to region structure
       rectangle - pointer to rectangle structure

   RESULTS
        status - return TRUE if successful operation
                 return FALSE if ran out of memory

   BUGS 

   SEE ALSO
        andrectregion() orregionregion() graphics/regions.h