Linking volumes

A "volume" is a set of interconnected triangles.

When you move or rotate a mesh with MOVE or ROTATE mode, you move only one volume.

If the mesh is complex and contains several volumes, you can link them by an invisible link using the LINK mode, so that they become a single volume.

You can either link some volumes by selecting them with the Shift key "link (several with SHIFT)", or link all volumes using "link all volumes".