On Mon, Oct 26, 2020 at 07:43:10PM +0000, Gavin Smith wrote: > On Mon, Oct 26, 2020 at 07:18:01PM +0100, Patrice Dumas wrote: > > > Another option is to use htlatex instead (if there is such a program), > > > but that could be problematic if there are any important usages of > > > plain TeX that don't work with LaTeX. > > > > I have no idea on that. It is not clear to me to what extent LaTeX is a > > superset of TeX or something different. If it is a superset, indeed, > > LaTeX tools could always be used, which could be simpler in some cases. > > Here's the best information I've found so far. This is a package > to use plain TeX in LaTeX: > > https://ctan.org/pkg/plain-ltx?lang=en > > > Inside the environment, not everything is as Knuth intended > > (some Plain commands are suppressed, some are faked, and some basic > > mechanisms—such as font selection and the output routine—remain > > as in LATEX). Thus “simple” documents will run, but elaborate > > macros defined in the document have a chance of failing. > > The only macro that I can see that looks relevant for math from > looking at the source of that package is \eqalign.
Also this package has more documentation: http://tug.ctan.org/tex-archive/macros/latex/contrib/cjw/ I can't see anything important other than \eqalign.
