This dialog box allows you to set any desired level, between one and six, for the heading. You can select multiple items and change all their settings at the same time.
[ << ] button
Increases the indent of the heading level selected from the list box.
[ >> ] button
Decreases the indent of the heading level selected from the list box.
[OK] button
Applies the heading level(s), set with "Heading Editor" to the document, and then closes the "Heading Editor" window.