Project Settings are used throughout the program, and can be edited with the Properties Windows. Some of the settings have external editors, but most can be set directly from the Properties Window.  When modifying Project Defaults, Map Window, and Session settings, the results show up instantly in the affected Map Windows as the changes are made.

The information in the Properties Window follows the selected node in the Project Explorer or the current Map Window, whichever had the focus last. If the last window to be accessed was the Project Explorer, then the Properties Window displays the information for the selected node within the Project Explorer. If the last window selected was a Map Window, then the properties for that window are displayed.