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Bill covered answering Mike's question, and thanks for that, but Robin's addition indirectly brings up that if you use WinKey + Number and an instance of that app is already open, it will throw focus to the open app, not start another instance. If you want another instance of the app, say another Notepad window to open for a different file, that's when you must use the WinKey + Shift + Number shortcut.
There are certain apps, mostly those that do not feature tabs for having multiple things open, where I have frequent need to have more than one instance open. Notepad just so happens to probably be the one where that's most frequently the case.
Brian - Windows 10, 64-Bit, Version 21H2, Build 19044
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