\html{tag} creates the HTML tag
<tag>, and \htmlsym{entity}
creates the HTML entity description
&entity;.
The \htmlsym command is useful if you need symbols from the
ISO Latin 1 alphabet which are not predefined in Hyperlatex.
You could, for instance, define a macro for the fraction ¼
as follows:
\T \newcommand{\onequarter}{$1/4$}
\W \newcommand{\onequarter}{\htmlsym{##188}}
Finally, the rawhtml environment allows you to write plain HTML,
if so is your desire. Everything between \begin{rawhtml} and
\end{rawhtml} will simply be included literally in the HTML output.