Sometimes you want to take a screenshot of a dialog that’s attached to a window. It turns out you can do this by pressing Command-Shift-4, pressing the Space bar, and then holding down the Command key when you mouse over the desired dialog.

Picsew is a handy iOS app for stitching together, cropping, bordering, and otherwise cleaning up screenshots. We walk you through some of our favorite features.

Need to display your Apple TV on your Mac for screenshots or a presentation? It’s easy and the necessary software is included with macOS.

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.