I recall that as well, my guess would be Sublime Text. Ah, it might have been this plugin for Atom, I was using that for a while: https://github.com/davidlegho

I recall that as well, my guess would be Sublime Text. Ah, it might have been this plugin for Atom, I was using that for a while: https://github.com/davidleghorn/atom-focus-mode https://github.com/davidleghorn/atom-focus-mode Edited to add that I found this for VS Code which I might try: https://marketplace.visualstudio.com/items?itemName=imagio.vscode-dimmer-block https://marketplace.visualstudio.com/items?itemName=imagio.v...