1. Section Headings
Headings can be automatically numbered, you can enable or disable this for each page (see #pragma section-numbers on HelpOnProcessingInstructions) and for the whole site (see show_section_numbers on HelpOnConfiguration).
For more information on the possible markup, see HelpOnEditing.
3.1. Level 3
3.1.1. Level 4
18.104.22.168. Level 5
Note that proper section numbering requires you to order sections according to a valid structure, i.e. correctly nested. Our sample doesn't do this, so you get a different numbering scheme than you might expect.