B.6.4 Does preview-latex work with plain TeX?

Again, no. Restructuring the ‘preview’ package for ‘plain’ operation would be required. Volunteers welcome.

In some cases you might get around by making a wrapper pseudo-Master file looking like the following:

\documentclass{article}
\usepackage{plain}
\begin{document}
\begin{plain}
\input myplainfile
\end{plain}
\end{document}

This document was generated by Ralf Angeli on January 13, 2013 using texi2html 1.82.