Usage: A typical appendix may be a table (or set of tables), maps, notes, etc. appended to the base document.

In some previous versions of this Tag Set, a <title> element was required on each appendix. A title was considered to be the basic requirement for producing an automated Table of Contents for online viewing of an article, so a title was required. However, as nice as it would be to keep that requirement, this is a conversion target Tag Set, and conversion experience has shown that not all appendices in the wild have either titles (for example, “Conversion Tables”) or labels (“Appendix 6”). Without true section-level headings it will be difficult to create automatic Tables of Contents and high-quality web and print displays.