TeX4ht and Plain TeX

Question

According to tug.org TeX4ht can be used with Plain TeX. I've tried the commands listed in the site above, but nothing works! All I can have is a simple text file, with .html extension, but without any HTML tag.

What is the correct way to convert a Plain TeX file into HTML?

Answer 1

According to CVR's blog, you need to enclose your document with these commands:

\input amstex
 \documentstyle{amsppt}
 \csname tex4ht\endcsname
 \document

 . . . source of your plain TeX document . . .

 \enddocument

and compile with

httex file "xhtml,html4.4ht,unicode.4ht,mathml.4ht"

Following sample works for me:

 \input amstex
 \documentstyle{amsppt}
 \csname tex4ht\endcsname
 \document

{\bf What} about the {\it formatting}

The quadratic formula is $-b \pm \sqrt{b^2 - 4ac} \over 2a$

P\v{r}\'ili\v{s} \v{z}lu\v{t}ou\v{c}k\'y ku\v{n} \'up\v{e}l \v{d}\'abelsk\'e \'ody
 \enddocument\bye

I am not plain TeX user and don't know what is the plain version of the inputenc, so instead of utf-8 characters I used control sequences for the diacritics.