How do I make a part containing only a sketch display in draft?
Use the Drawing View Wizard as you would for any other part and place a view. The view will be displayed as an empty view (dashed box) at first. Right mouse click on the view and go to Properties > Display tab. Go to the Parts list Options and select "List Sketches". Select the sketch in the Parts List, then check the "Show" check box > Apply > OK. The view will have to be updated to make the view display correctly.