If a board is going to be sent through an automated (pick and place) assembly process, then the board should have at least one fiducial mark. A fiducial mark may be added by specifying the size and shape of the mark and clicking at the desired location. Click on the Location button or press Ctrl when clicking to specify the location coordinates with the keyboard. Fiducials must not be placed too close to copper features or holes. If placed within a copper plane, an opening will be made in the copper. If a component layer exists, the fiducial mark will also be indicated there.