Use this menu option to duplicate (create a copy of) selected elements in the Face window.
CAD mode
When working in CAD mode, use this menu option to duplicate the currently selected lines, arcs and circles in the Face window.
The Duplicate menu option is available only when a Face window is active and you are in selection mode with at least one line, arc or circle selected.
CAM mode
When working in CAM mode, use this menu option to add copies of the profiles selected in the Face window to the currently selected work group.