Check for completely overlapping polygons of the same layer

Version 1

    The rule check below takes advantage of the fact that the AND operation works on unmerged data.



         @ fully overlapping polygons in the input on layer METALFILL

         overlapping = AND METALFILL

         not_overlapping = METALFILL NOT overlapping

         overlapping NOT TOUCH not_overlapping // this eliminates cases that are not completely coincident