# Section Numbering

Section headings (`Hn` elements) can be automatically numbered to reflect the document structure. Element `H1` is supposed to be the document title and is not numbered, but, when this function is on, all other headings (`H2` to `H6`) receive a number that is computed according to their type and their position in the document structure. These numbers are displayed in blue and cannot be edited directly, but they are updated automatically whenever a heading is created or deleted. They appear not only in the main view, but also in the Table of contents view.

When the document is printed, section numbers appear in the printed document only if the numbering function is on at that time.

When the document is saved, section numbers are not saved in the HTML form, but they are generated in the text form.

The Section Numbering command from the Edit menu is a toggle that allows you to switch the numbering function on or off.