To delete a curve:
1. Select the Curve-Delete Curve command.
2. Position the cursor on the curve you wish to delete and click the left mouse button.
3. Repeat step 2 as many times as you want. The Delete Curve command will stay active or current until you select another command.
Note 1: If you delete a curve by mistake, you can undo the command by using the Edit-Undo command.