Creating multilevel lists in documents
Insert indented ordered lists or an outline that contains a document's section headings.
Procedure
What to do next
Note: You can also apply the first level of a preformatted
style to an existing list by typing the items from the beginning,
selecting the items, and then clicking . Then use the
Enter and Tab keys to fill in the sub-levels. If you are working with
headings, notice that pressing Enter after a heading results in a
body text style for the next line, rather than the same style that
results when you press Enter in a list that does not include headings.