Show code line numbers in JupyterLab

Question

In Jupyter notebook, cntrl+ m L toggles code line numbers in current cell but how to bring the code line numbers in JupyterLab?

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Answer 1

you can turn this on by default by going into Settings --> Advanced Settings Editor:

As you can see from the screenshot, you can edit other features as well and easily set them back to default by deleting your 'User Overrides'