What is Shift + Ctrl + Page Up keyboard shortcut for?

Firefox - Move tab in focus left  

Vivaldi - Move active tab left  

Firefox (macOS) - Move Tab Left  

Nuance Power PDF - Read previous page  

Notepad2 - Select previous block  

Adobe Acrobat 2017 (Windows and Unix) - First page  

Bluefish - First document  

CorelDRAW 2020 - Select to Beginning of Text  

CorelDRAW 2020 - Select to Beginning of Text  

Harmony 20 - Bring to front  

Inkscape - Raise thelayer  

Shotcut - Backward 10 Seconds  

Modo 12.1 - Open next tab  

Terminator - Swap tab position with previous Tab  

Kitty 0.25.0 (Linux) - Page up  

ZOC 7.23 - Transfer > Send text file  

Everything - Extend item selection, keeping the current selection  

Royal TS - Select next tab  

Tilda - Move tab left  

Windows Terminal 1.7 - Scroll up a page  

Visual Studio Code (Windows) - Move editor left  

Unreal Engine 5.0 (early access) - Bring selection to the front snap layer  

SQL Server Management Studio (SSMS) - Extend the selection to the top of the current window  

SQL Server Management Studio (SSMS) - Moves the cursor to the first line in view, extending the selection  

Visual Studio Code (Linux) - Move editor left  

Sublime Text 4 - Previous view  

Delphi - Selects from the cursor position to the top of the screen  

Microsoft Visual Studio 2017 (All shortcuts) - Edit.ViewTopExtend  

Geany 1.38 - Move document left  

Free Pascal IDE - Extend selection to the beginning of the file  

Krusader 2.8 (File manager) - Move current tab to the left  

Microsoft Flight Simulator 2020 - Increase Nav1 Frequency  

Microsoft Excel 2019 - Select the current and previous sheet in a workbook  

Microsoft Excel 2019 - Selects the current and previous sheet in a workbook  

Studio One 5.4 - Page Up Extend Add  

Cakewalk by Bandlab - Go to previous marker  

Cakewalk by Bandlab - Previous marker  

LibreOffice Calc - Adds the previous sheet to the current selection of sheets. If all the sheets in a spreadsheet are selected, this shortcut key combination only selects the previous sheet. Makes the previous sheet the current sheet  

LightBurn - Align center vertically  

Edius Pro 9 - Scroll Up  

Adobe InDesign 2020 (Windows) - First Page  

Google Sheets - Move to previous sheet  

Altium Designer - Extend a selection to the top of the current document window from the current cursor position  

Rhino 6 - TiltView > Left  

Rhino 6 - TiltView left