Arbortext IsoDraw > User's Reference > Palette Window Toolbox > Rotational Surfaces > Quitting the Projection
  
Quitting the Projection
Click an empty part of the drawing area. The Projection dialog box appears:
If you select Find elliptical arcs, all Bézier paths with an elliptical form appear as segments of an ellipse.
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If you want to add to a drawing of a rotational body, you should select the Find elliptical arcs option. Working with elliptical elements is easier and more precise.
Clicking No lets you quit this dialog box and continue editing the projection.
Clicking Yes terminates the projection process. The elements are then projected into their final positions. You can now delete the basic ellipse.