Option-dragging while defining the bounds of a screenshot

I’ve been taking screenshots on Macs for more than thirty years. I thought I was pretty much a power user. I’ve known forever that you can do not just the whole screen (⇧⌘3) but a specific target area (⇧⌘4), and of course the space trick for capturing a window (including menus!). But what I didn’t know is… Read more