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## Defining the module

The next step is to define the module in the ``modules'` file. This is not strictly necessary, but modules can be convenient in grouping together related files and directories.

In simple cases these steps are sufficient to define a module.

1. Get a working copy of the modules file.

       $ cvs checkout CVSROOT/modules
       $ cd CVSROOT

2. Edit the file and insert a line that defines the module. See section The administrative files, for an introduction. See section The modules file, for a full description of the modules file. You can use the following line to define the module ``tc'`:

       tc   yoyodyne/tc

3. Commit your changes to the modules file.

       $ cvs commit -m "Added the tc module." modules

4. Release the modules module.

       $ cd ..
       $ cvs release -d CVSROOT

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