The Edit tool will allow you to download a copy of any file in the USDA document exchange repository. Using this tool, you will also be able to modify the file locally, while blocking it for other users to edit it; this means they won't be able to make modifications while you are working on it. To Edit a file, click on it to select it, then click on the Edit tool.
Clicking on the edit tool will download a copy, then open the associated application to show you the contents. For instance, if you selected a .doc file, Cplanner would open Microsoft Word to edit it.