Mesh TrimByPlane

Description
The Mesh TrimByPlane command trims faces and parts of faces on one side of a plane from a mesh object.

Usage

 * 1) Select a single mesh object and a single Part plane. The (extended) plane should intersect the mesh object.
 * 2) There are several ways to invoke the command:
 * 3) * Press the button.
 * 4) * Select the option from the menu.
 * 5) The  dialog box opens.
 * 6)  by pressing one of the buttons:
 * : removes the faces and parts of faces above the plane, and creates a new mesh object containing them.
 * : removes the faces and parts of faces above the plane, and creates a new mesh object containing them.
 * : removes the faces and parts of faces above the plane, and creates a new mesh object containing them.