In order for an application to be started from within the Workplace Shell, it must first be defined and configured as described in Defining a DOS Application. Once this has been done, the application may be started simply by double-clicking mouse button 1 on the application's icon on the desktop or in a folder.
Note that when the application is started, the background of the icon will change to indicate that the application is in use. By default, if the user double-clicks mouse button 1 on the icon a second time, the operating system will not start a second instance of the application, but will simply bring the already started instance to the foreground.
If the user wishes to create a second instance of the application, a second representative object can be created by copying the original instance. Alternatively, the user can change the default behavior in the Window page of the settings notebook.