The hyperTeX project extended the functionality of all the
LaTeX cross-referencing commands (including the table of contents)
\special commands which are parsed by DVI processors
conforming to the HyperTeX guidelines;
it provides general hypertext links, including those
to external documents.
The HyperTeX specification says that conformant viewers/translators
must recognize the following set of
The href, name and end commands are used to do the basic hypertext operations of establishing links between sections of documents.
Further details are available on http://arXiv.org/hypertex/; there are two commonly-used implementations of the specification, a modified xdvi and (recent releases of) dvips. Output from the latter may be used in recent releases of ghostscript or Acrobat Distiller.