What is Alt + ↑   Shift + ← keyboard shortcut for?

Audacity - Pan left on focused track  

Microsoft Word 2019 - Promote a paragraph  

Microsoft OneNote - Decrease paragraph indent  

Microsoft OneNote - Move the current paragraph or several selected paragraphs left (decreasing the indent)  

Ace Editor - Select to line start  

Scrivener 1.9.9 - Enclosing group  

Google Docs (PC) - Rotate counterclockwise by 1°  

Adobe Acrobat 2017 (Mac) - (Windows only) Search previous document (with Search results displaying multiple files)  

Adobe Acrobat 2017 (Windows and Unix) - (Windows only) Search previous document (with Search results displaying multiple files)  

OneNote for the web - Decrease indent  

KeepNote 0.7.8 - Go to parent note  

Adobe Premiere Pro (Windows) - Nudge Clip Selection Left Five Frames  

Adobe Premiere Pro (Windows) - Decrease Kerning by Five Units  

Adobe Premiere Pro (Windows) - Trim Backward by Large Trim Offset  

Node Wrangler 3.36 - Reduce mix factor by 0.01  

Nuke - Previous Tag  

DesignSpark Mechanical 5.0 - Nudge secondary (inactive) dimension Down by small amount  

JAWS - (when the JAWS Cursor is active) Mouse Left  

JAWS - (when the JAWS Cursor is active) Mouse Left  

Visual Studio Code (Windows) - Shrink selection  

Delphi - Selects the column to the left of the cursor  

RStudio - Select to Line Start  

SQL Server Management Studio (SSMS) - Moves the cursor one character to the left and extends the column selection  

Sublime Text 4 - Move  

Visual Studio Code (Linux) - Shrink selection  

Microsoft Visual Studio 2017 (All shortcuts) - Arrow  Graphics.MovePixelSelectionLeft  

Microsoft Visual Studio 2017 (All shortcuts) - Arrow  Edit.CharLeftExtendColumn  

Microsoft Visual Studio 2017 (All shortcuts) - Arrow  Edit.Outdent  

Microsoft Visual Studio 2017 (All shortcuts) - Arrow  Edit.Outdent  

Openbox - Open the desktop switching dialog, to go to the desktop to the left of the current one, and bring the active window with you  

Steinberg Cubase 10.5 - End left  

Adobe InDesign 2020 (Windows) - Nudge left x10 duplicate  

Bitwig Studio 4.2 - Nudge Events One Bar Backward  

Bitwig Studio 4.2 - Nudge Events One Step Backward  

Bitwig Studio 4.2 - Extend Selection Range to Previous Item  

Bitwig Studio 4.2 - Move cursor and extend selection word left  

Microsoft PowerPoint 2019 (Slideshows) - Seek backward 0.25 seconds, then pause  

Edius Pro 9 - Add Focus to Left  

Nuendo 10 - End left  

Archicad 24 - Nudge Left (Larger)  

Altium Designer - Extend a selection column by one column to the left of the current cursor position