Windows Terminal
Split the pane downward
To split the pane downward in Windows Terminal, press Alt + Shift + Minus. It is listed for Windows, and no Mac version is documented here.
Where it works: Anywhere
The new pane opens with the same profile as the current one.
Where this comes from
Windows Terminal defaults.json - microsoft/terminal
Documentation checked on 2026-09-14. That is a documentation review, not a test run inside the application.