To edit an image, either double click the image or select the image by clicking on it and then use the menu sequence Edit ® Edit Image. Either method will invoke the image editor that you selected in the Preferences dialog for the image editor as described in the section on Image Support.
You can view the properties of an image by first selecting the image and then right clicking the image to select Image Properties from the popup menu. The properties include the actual location of the image on disk, the image's actual size in pixels, and the image's current display size in inches.