You do not have to the `literate' LaTeX style option; e.g., `\documentstyle[literate]{report}', but it is probably a good idea so people don't think you're writing real LaTeX.

`\documentstyle' has two magical actions: (1) the type of document (report, article, etc.) determines the default value for `\rootsectiontype', and (2) it indicates that a standalone document is being generated (not just a part of one). [APRIL91: bear in mind that this standalone business is in jeopardy.]