Windows, always doing it the painful way. On the Mac:
Command-Shift-3: Screen shot is saved to a PNG on your desktop
Command-Shift-4: You get a crosshairs showing screen coordinates. Drag what you want captured and it becomes a PNG on your desktop.
Spacebar after previous: Toggles between crosshairs and a camera cursor with which any window you click on (even if it's not in the foreground) becomes a PNG on your desktop.
Adding Control to those puts it in the clipboard instead.
I KNOW that!
I was explaining an easier method for any PC users who might be reading this thread, which the author of the article wasn’t aware of. I’m not defending PCs against Macs.