What is ⌥ Option + ↑   Shift + ⌘ Cmd + K keyboard shortcut for?

Popular programs using this shortcut

What this shortcut does in different programs?

1. Clip Studio Paint Pro - Shortcut settings [macOS/iPad]  
2. Google Sheets (Mac) - Select input tools  
3. Xcode - Move Focus To Previous Area  
4. Adobe Illustrator (Mac) - Open the Keyboard Shortcuts dialog box  
5. Apple iBooks - Edit chart data  

All programs

All programs using this shortcut, by category.

General

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Imaging

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Productivity

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