To edit a halo, click the arrow in the top right-hand corner of the window and select one of the two commands from the pop-up menu. When you select a command, a dialog box appears. The dialog boxes for New halo and Edit halo are structured in the same way. The only difference is that, for the New halo window, an entry box appears for the name, whereas for the Edit halo window, the name of the current halo is already entered. The following description applies for both dialog boxes.

The Edit halo dialog box also appears if you double-click on the name in the Halos window.