Fiducial marks

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. Press Ctrl+Alt 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 Pick&Place layer exists, the fiducial mark will also be indicated there.