For many novice users, not realizing that the PrtScn key (Print Screen on some keyboards) was not printing their screen became a revelation when they understood that it was instead sending the image to the clipboard. Combining ALT with the PrtScn key brought them a new nirvana when they realized that would capture the active window. Capturing multiple active windows or one screen of a multiple screen setup did not seem possible unless you knew about Microsoft’s Snipping Tool. The Snipping Tool comes with Windows 10, 8, 7, and can be installed on Windows Vista and XP via the Microsoft Experience Pack for Tablet PC.