What is ⌘ Cmd + ↑  Shift + 6 keyboard shortcut for?

Popular programs using this shortcut

What this shortcut does in different programs?

1. DaVinci Resolve 15 (Mac) - Enable / disable video track V6  
2. Tumblr - Strikethrough  
3. Rekordbox 6 (macOS) - Deck 2: Clear hot cue A  
4. Microsoft Teams (macOS, web) - Open Files  
5. PixInsight (macOS) - Zoom -> 1:6  

All programs

All programs using this shortcut, by category.

Note: This page includes variations for Command + Shift + 6
Shift + Command + 6
Command + Shift + 6. Restrict to only Command + Shift + 6.