The Editor and The Project Manager.

Compass consists of three integrated programs: the Project Manager, the Editor and the Viewer. Normally, the Project Manager runs the Editor as needed. For this reason, most of the time, you will not need to select or open files in your project because the Project Manager will have already done this for you. However, in some instances, it is useful to run the Editor manually and the Project Manager allows you to do this. When you run the Editor manually, you will be responsible for selecting and opening files yourself. For more information, see the Project Manager help.