What is ↑   Shift + Ctrl + F6 keyboard shortcut for?

Opera - Switch to previous tab on tab bar  

Audacity - Move backward through currently focused toolbar in Upper Toolbar dock area, Track View and currently focused toolbar in Lower Toolbar dock area  

Mozilla Thunderbird - Move to previous mail pane  

Mozilla Thunderbird - Move to previous main UI element  

Microsoft Word 2019 - Go to the previous window  

Adobe Acrobat 2017 (Windows and Unix) - (UNIX) Next open document  

Adobe Acrobat 2017 (Windows and Unix) - Move to previous open document window (when focus is on document pane)  

Microsoft FrontPage - Switch to the previous window.  

Adobe After Effects 2021 - Purge snapshot  

Adobe Illustrator - Navigate to previous document  

PaintShop Pro 2018 - Reset materials palette  

Kitty 0.25.0 (Linux) - Debug kitty.conf  

NetBeans - Start debugging test for file  

SAP ABAP - Select the previous open editor you want to navigate to  

SQL Server Management Studio (SSMS) - Move to the previous document in the editor or designer  

Sublime Text 4 - Previous misspelling  

SigmaStudio 4.7 - Zoom to normal/Selection  

IBM COBOL Editor - Previous Editor  

Microsoft Visual Studio 2017 (All shortcuts) - Window.PreviousDocumentWindow  

Xyplorer - Backup to Other Pane  

Microsoft Teams (Desktop) - Go to previous section  

Adobe Connect - Move focus to previous pod  

Microsoft Teams (Web) - Go to previous section  

MetaTrader 5 - Activate the next chart window  

Excel for the web - Move between the cells, sheet tabs, status bar, list of services, and the ribbon  

MindManager 21 - View previous map  

Microsoft Access 2019 - Switch to the next or previous database window  

Microsoft PowerApps - Move to the previous stream  

Bluebeam Revu - Previous document  

Tableau - Cycle backward through open worksheets  

Sage 50 - Move to the previous window  

Smartsheet (Windows) - Move focus backward to the previous accessible region  

Sway (web) - Move backward between the following main regions: Top navigation bar, Secondary navigation bar, Storyline, Design, Task pane  

ETABS 20.3 - Display design info…  

Eplan Platform 2.9 - Grid display on/off