I worked on Microsoft’s Windows QA team long ago. My team used to have “No-mouse Tuesdays”: you were supposed to do all your normal work but only using the keyboard.
I guess that team was dismantled some time ago, with no on carrying the flag anymore. Modern windows is impossible to work on using just keyboard. Some mods & extensions do help. But the native experience is abysmal.
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What I wouldn't give to work for a company that actually cares about QA.