Photoshop Elements Editor lets you refine or enhance your photos in many ways. There are lots of great things you can do with your photos in Photoshop Elements Editor.
If you have opened a photo in Elements Organizer, the same photo is opened in Editor. If you switch to the Organizer workspace, you’ll see a lock symbol over the thumbnail of the opened file. The file cannot be changed in the Organizer workspace until it is closed in the Editor workspace.

