JupyterLab
Recall the previous history entry
To recall the previous history entry in JupyterLab, press Alt + Up arrow. It is listed for Windows, and no Mac version is documented here. It works in the browser version.
Where it works: Notebook, edit mode
The files do not name the Mac key for Alt, so no Mac keys are shown.
Where this comes from
JupyterLab shortcut schemas - jupyterlab/jupyterlab
Documentation checked on 2026-09-14. That is a documentation review, not a test run inside the application.