To open an existing mapping project, either click on the Open Project button in the right toolbar, or click on the “Open a Mapping Project” text button in the Quick Start column. This displays a dialog (Figure 46) in which you can select a name and specify the directory location of the project to be opened. By default, only 454 System Mapping Projects will be displayed. You may choose to display all files by selecting “All Files” from the “Files of Type” dropdown menu.