What is Shift + Ctrl + Alt + Page Down keyboard shortcut for?

Popular programs using this shortcut

What this shortcut does in different programs?

1. Microsoft Word 2019 - Extend a selection to the end of a window  
2. Visual Studio Code (Windows) - Column (box) selection page down  
3. KDE Plasma Desktop - Shut Down without confirmation  
4. Kali Linux - Move window one workspace down  
5. Altium Designer - Extend a column selection to the bottom of the current document window from the current cursor position  

All programs

All programs using this shortcut, by category.

Note: This page includes variations for Shift + Ctrl + Alt + Page Down
Shift + Alt + Ctrl + Page Down
Ctrl + Shift + Alt + Page Down
Ctrl + Alt + Shift + Page Down
Alt + Ctrl + Shift + Page Down
Alt + Shift + Ctrl + Page Down
Shift + Ctrl + Alt + Page Down. Restrict to only Shift + Ctrl + Alt + Page Down.