Selecting on a Faceted Body

When you select placement points on a faceted body, a circle around the point of the cursor helps you to identify facet faces, edges, and points. The following images show the types of selections you can make:

A double circle (normal to the screen) is displayed when the cursor point is snapped to a facet's vertex.
A single circle is displayed and the facet's edge is highlighted when the cursor point is snapped to a facet's edge. The circle lies in the plane at the average of the two neighboring facet faces.
A single large circle is displayed and the facet is highlighted when the cursor point is on a facet. The circle lies in the plane of the facet face.