Hotkeys available in Windows 10 "Open With" dialogue

It doesn't appear to have a lot of hotkeys per se, but it is navigable with the keyboard.

When the How do you want to open this file? dialog appears, you can press Tab, Down, Space, End, Space to produce the normal Open with browser dialog. From there, Alt+Up moves up one level. To select an item, you can type its name and press Enter, or press Shift+Tab to move into the main area, in which you can use the arrow keys and Enter to open a folder or choose a file.

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