 and [incr Tcl]
classes.  This section briefly covers the essential aspects of this
wrapping.
</p>

<H3><a name="Tcl_nn15">37.3.1 Modules</a></H3>


<p>
The SWIG <tt>%module</tt> directive specifies the name of the Tcl
module. If you specify `<tt>%module example</tt>', then everything is
compiled into an extension module <tt>example.so</tt>. When choosing a
module name, make sure you don't use the same name as a built-in
Tcl command.
</p>

<p>
One pitfall to watch out for is module names involving numbers. 