What is ⌥ Opt + ↑  Shift + ↑  ↓ keyboard shortcut for?

Popular programs using this shortcut

What this shortcut does in different programs?

1. Visual Studio Code (Mac) - Copy line up / down  
2. Adobe Illustrator (Mac) - Increase or decrease baseline shift (horizontal text)  
3. Adobe Photoshop (macOS) - Decrease or increase baseline shift 2 points or pixels. Hold down Ctrl (Windows) or Command (macOS) to decrease/increase by 10  
4. Discord (macOS) - Navigate between unread channels  
5. Ulysses (iOS) - Select text  

All programs

All programs using this shortcut, by category.

Note: This page includes variations for Option + Shift + updown
Shift + Option + updown
Option + Shift + updown. Restrict to only Option + Shift + updown.