What is ↑   Shift + ⌘ Cmd + T keyboard shortcut for?

Safari - Reopen the last tab or window you closed  

Google Chrome (macOS) - Reopen previously closed tabs in the order they were closed  

Microsoft Edge (macOS) - Reopen the last closed tab, and switch to it  

Apple iBooks - Show the Styles drawer  

Firefox (macOS) - Undo Close Tab  

Apple macOS - Add selected Finder item to the Dock (OS X Mountain Lion or earlier)  

Apple macOS - Show or hide a Finder tab  

TextMate - Go to symbol  

Adobe Acrobat 2017 (Mac) - Insert Blank Pages tool  

Bear (macOS) - Toggle Todo  

Typora 0.9.81 (macOS) - Reopen closed file  

Zettlr (MacOS) - Gives focus to the tree window  

Xcode - New Window  

Toon Boom Storyboard Pro 22 (macOS) - Text tool  

Adobe Premiere Pro (Mac) - Tab Stops...  

Adobe Illustrator (Mac) - Open the Tabs panel  

Adobe Photoshop (macOS) - Repeat last duplicate and move  

Autodesk Mudbox 2022 (macOS) - Save textures  

Corel Painter (Mac) - Add current color to color set  

Adobe Lightroom Classic (Mac) - Create new subfolder (segmented tethered capture)  

Adobe Animate CC (Mac) - Modify Paragraph  

OmniGraffle 7 - Make table  

WireShark 3.4.3 (macOS) - Shift or change packet timestamps  

Sequel Pro 1.1.2 - Show/Hide Toolbar  

Adobe Dreamweaver 20.2 (macOS) - Show Page Titles  

Git Tower (Mac) - Create new tag  

RStudio (Mac) - Test Package (Desktop)  

Apple Finder - Show or hide a Finder tab  

QLab 4 - Fade - Set Levels From Target  

Cisco Jabber (Mac) - Toggle expanded contact view  

Zoom (Mac) - Pause or resume screen share  

Discord (macOS) - Create a private group  

Twitterrific 6 - Translate selected item  

Signal (macOS) - Focus composer  

Blackboard Collaborate (macOS) - Open Object Explorer window  

Apple Calendar - Go to a specific date.  

MuseScore 3 (macOS) - System text  

Apple GarageBand - Show/Hide the Tempo track  

Apple Pages - Show or hide the tab bar  

Airmail - Plain text composer  

Browser tab management - (Firefox, Opera, Chrome) Open a previously closed tab  

Things (Mac) - Direct access to add a tag  

Things (iPad) - Open tag window inside an element  

Adobe Captivate 2019 (macOS) - Insert a text entry box  

iPadOS 13 - Reopen last closed tab  

Vectorworks 2020 (macOS) - Format text  

GeoGebra - Export as PSTricks