What is Shift + Page Down keyboard shortcut for?

Arch Linux - Scroll console buffer down  

Alacritty 0.9.0 - Scroll page down  

Microsoft Word 2019 - Extend a selection one screen down  

CudaText 1.88.3 - Caret page down, select  

Most used text editing - Select a frame of text below the cursor  

LibreOffice Writer - Move down screen page with selection  

Microsoft FrontPage - Move one screen down.  

Ace Editor - Select page down  

Ace Editor (Mac) - Select page down  

Adobe After Effects 2021 - Go forward 10 frames  

Paint.NET - Scroll right  

Inkscape - Move to layer below  

Shotcut - Forward Two Seconds  

CorelDRAW 2020 - Move object to the bottom of the stacking order.  

CorelDRAW 2020 - Select Down 1 Frame  

CorelDRAW 2020 - Select Down 1 Frame  

Blender 3.4.1 - Move select  

CorelDRAW Graphics Suite 2018 - To Back Of Layer  

Shotcut (Mac) - Forward Two Seconds  

Everything - Extend item selection  

JAWS - Read to the bottom of the column  

Haltech ESP - Large Decrease of Cell Value  

SQL Server Management Studio (SSMS) - Extend selection down one page  

Atom (Windows) - core:select-page-down  

Visual Studio Code (Windows) - Scroll page down  

Visual Studio Code (Linux) - Scroll page down  

Delphi - Moves the cursor down one line and selects from the right of the starting cursor position  

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

jEdit - Extend selection by one screenful.  

Free Pascal IDE - Extend selection one page down  

Team Explorer and Azure DevOps - Select last/next swimlane below  

PotPlayer 1.7 - Next bookmark / Chapter  

Corel Photo-Paint 2021 - Arrange > Order > To back  

Total War: Attila - Decrease camera rotation  

Total War: Attila (Mac) - Decrease camera rotation  

ChessBase 13 - Mark page - full of games  

WPS Office - Selects the cell range from the current cells to the next screen of the same column(s)  

Edius Pro 9 - Move Cursor to Next Sequence Marker  

Studio One 5.4 - Page Down Extend  

Outlook 2019 and Outlook 2016 - Extend the selection to the last card on the last page  

LibreOffice Calc - Selects cells from the current cell down to one page in the current column or extends the existing selection one page down  

CintaNotes 3.13 - Move cursor extending selection.  

GnuCash - Jump to the blank transaction at the bottom  

Excel for the web - Extend selection down one screen (28 rows)  

Salesforce - (Windows)    Select page down  

Salesforce - (Windows)    Select page down  

Altium Designer - Zoom-out, relative to the current cursor location and in progressively larger steps  

Altium Designer - Extend a selection by one page down from the current cursor position  

CircuitStudio - Zoom-out small increments