What is Ctrl + Alt + F4 keyboard shortcut for?

Popular programs using this shortcut

What this shortcut does in different programs?

1. PotPlayer 1.7 - PIP primary screen: Capture2 Area  
2. Red Hat Enterprise Linux - Display an available screen (text-mode shell prompt screens)  
3. PSPad - Exit  
4. Xyplorer - Exit without Saving  
5. WinSCP - Edit focused file in an internal editor  

All programs

All programs using this shortcut, by category.

Note: This page includes variations for Ctrl + Alt + F4
Alt + Ctrl + F4
Ctrl + Alt + F4. Restrict to only Ctrl + Alt + F4.