To Preview a Board in the Flat State
1. In an active board part, click on the Graphics toolbar. A window opens with the board and its segments in the flat state.
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Set the accessory_window_display configuration option to yes to open the preview in a docked window, or set it to no to open the preview separately.
2. To toggle the display of overlapping geometry, click .
3. To toggle the display of the length and width dimensions of the unbent board segments, click .
4. Click to close the window.