As a developer, you'll need to modify files on CVS. To do this, simply make the appropriate changes to your local copy of the repository. The changes you make to the sources are not applied to the remote repository until you explicitly tell cvs to "commit" your changes. When you've tested all your modifications to ensure that they work properly and you're ready to apply your changes to the repository, follow this two-step process. First, update your sources by typing the following command in your main source directory:

# cvs update -dP