Cinema 4D / BodyPaint 3D Program Documentation Reference Cinema 4D Cinema 4D Prime Select Menu
Function available in CINEMA 4D Prime, Visualize, Broadcast, Studio & BodyPaint 3D

Shrink Selection

This command shrinks the selection by deselecting all points, edges or polygons (depending on which mode you are in) at the edge of the selection.

If the polygon is closed (for example, a sphere) and you select all polygons, you cannot shrink the selection since it has no edge.

At left the original selection; at right after using Shrink Selection