Options controlling Titles, File-Names and Sectioning
For all documents the sectioning levels referred to above are:
| 0 |
document |
| 1 |
part |
| 2 |
chapter |
| 3 |
section |
| 4 |
subsection |
| 5 |
subsubsection |
| 6 |
paragraph |
| 7 |
subparagraph |
| 8 |
subsubparagraph |
These levels apply even when the document contains no sectioning for
the shallower levels; e.g. no part or chapter commands is most common,
especially when using LATEX's article document-class.