automagic – Automagic numbering in Plain TeX
Provides section macros, automatically numbered, automatic numbering of equations, provision for a table of contents, and a primitive label mechanism.
Maybe you are interested in the following packages as well.
- label-pln: Print address labels in three columns
- harvmac: Macros for scientific articles
- letter1: Letter formatting macros
- laps: Zero-width boxes for annotations, etc