The Preview app has long provided tools that let you mark up an image with arrows, text, and even free-form drawing. But other Mac apps—Mail, Notes, Photos, TextEdit, and more—also provide access to similar markup tools, and now macOS 10.14 Mojave makes them available even in the Finder and the new screenshot interface.

Quick Look can help you peer inside files quickly, but it’s easy to miss or forget about. Read on to learn how to use Quick Look from the Finder, within some of Apple’s apps, and from the command line. We’ll also share some tricks you may not know and some of our favorite plug-ins that make Quick Look even more useful.