The idea with modules is to not define localities. There is already a
structure in LaTeX for creating localities, name the environments. In fact,
a convenient way to implement environments is by creating a module called
"environment", which defines the behavior of environments, including how to
define new environments.

  In fact, one can go one step further and create a module "Environment"
which is used to create different styles of environments (say if you want
to change that \begin{foo} ... \end{foo} to something else, or perhaps
create environments for HTML code, or something).

  I have put up a link on my home page to the LaTeX/TeX code I once made
while exploring these ideas. It is just a copy of what I happened to have
in my home directory, so it's a mess. But the stuff is at least available
for exploration.

  Hans Aberg
                  * Email: Hans Aberg <mailto:[log in to unmask]>
                  * Home Page: <http://www.matematik.su.se/~haberg/>
                  * AMS member listing: <http://www.ams.org/cml/>