Many sections include a list of references to module documentation
or external documents. These lists are created using the
\seealso environment. This environment defines some
additional macros to support creating reference entries in a
reasonable manner.
\begin{seealso}
This environment creates a ``See also:'' heading and defines the
markup used to describe individual references.
\seemodule[key]{name}{why}
Refer to another module. why should be a brief
explanation of why the reference may be interesting. The module
name is given in name, with the link key given in
key if necessary. In the HTML and PDF conversions, the
module name will be a hyperlink to the referred-to module.
Note: The module must be documented in the same
document (the corresponding \declaremodule is required).
\seetext{text}
Add arbitrary text text to the ``See also:'' list. This
can be used to refer to off-line materials or on-line materials
using the \url macro.
