OA Card

Edit mode
- left key : add points on edit grid to create a contour
- right key : switch to Display mode
- scroll : change depth of edit grid
Contour editing
- left key : add points or close contour (connect to the start point or press ctrl key )
- right key : undo the last point
Contour closed
- left key : use contour to create a Face/Pull/Hole (select from GUI)
- right key : drag to move the contour
- scroll : change the depth of edit grid
Display mode
- left key : move the camera
- right key : switch to Edit mode
- scroll : change the card angle