A multi-level list is a list that describes hierarchical relationships between the list paragraphs. These lists are also called outline lists because they resemble outlines. The list’s numbering scheme (as well as indentations) show rank as well as how items are subordinate to one another. You can tell where each paragraph fits in the list with respect to the paragraphs before and after it. You can include up to nine levels in a multi-level list.
To create a multi-level list, define the list and then create a paragraph style for each level you want. For example, a list with four levels requires four paragraph styles (each one assigned the same defined list). As you create each style, you describe its numbering format and paragraph formatting.
For more information on creating outlines and multi-levels lists, visit www.adobe.com/go/learn_id_numbered_lists.