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

Popular programs using this shortcut

What this shortcut does in different programs?

1. Google Docs (iPhone & iPad) - Move to the next table row  
2. Google Docs (macOS) - Move to the next table row  

All programs

All programs using this shortcut, by category.

Note: This page includes variations for Ctrl + Command + Shift + T then M
Ctrl + Shift + Command + T then M
Command + Ctrl + Shift + T then M
Command + Shift + Ctrl + T then M
Shift + Command + Ctrl + T then M
Shift + Ctrl + Command + T then M
Ctrl + Command + Shift + T then M. Restrict to only Ctrl + Command + Shift + T then M.