Editing XSL Formatting Objects (section)

===Lists===

An XSL-FO list is, essentially, two sets of blocks stacked side by side. An entry consists of a block on the "left", or start inline direction, and a block sequence on the "right", or end inline direction. The block on the left is conceptually what would be the number or bullet in a list. However, it could just as easily be a string of text, as one might see in a glossary entry. The block on the right works as expected. Both of these blocks can be block containers, or have multiple blocks in a single list entry.

Numbering of XSL-FO lists, when they are numbered, is expected to be done by the XSLT, or whatever other process, that generated the XSL-FO document. As such, number lists are to be explicitly numbered in XSL-FO.