App Exposé is a quick way to open recent files, view previews

App Exposé (System Preferences > Trackpad > More Gestures) is a pretty cool feature that lets you four-finger swipe down to view all open windows of the current app. But if you use App Exposé on a document-based app like Byword or Pages, you’ll see a list along the bottom of your display of the most recent files the app has opened.

For bonus points, you can ⌘-⇥ (Command-Tab) while in App Exposé to switch between the windows of running apps. This way if you’re using multiple document-based apps, you can easily switch between viewing a visual list of your recent documents, complete with document previews for easy identification.