The utility is working with a polygonal mesh and with the modifier Edit Poly.
Designed to highlight the edges and polygons with specific characteristics: the open edges, polygons with two vertices, with three, more than four vertices, polygons with zero area, etc.
Management for each of the characteristic group is simple - by using the button "+" in the evolution of the elements are added to the current selection, but with the button "S" selection resets the elements in and replaced with the selection of the current group.
inside poly - search for situations where a polygon is located in another.
Offer new interesting situations for analysis is welcome.