Editing an arc

To edit an arc, use one of the following methods:

• Select the arc and use the graphical handles to edit it.
• Double-click the arc, or right-click the arc and select Modify from the Arc context menu, to display the Arc dialog.
  Note: The name of the arc, and the level on which it lies, are at the top of the context menu.
• You can also simultaneously edit multiple arcs.