Re: Jumping to an app starting with a specific letter.
"Microsoft is still tweaking the Start menu and in this build you can tap or click a letter to get an alphabet menu, so you can jump to apps beginning with a specific letter. It does not quite work, though: I tapped P in search of Paint, but it does not come up, since Paint is under Windows Accessories. I should have tapped W."
Rubbish - on Windows 10 build 10158, tap the Windows key, hit P, Paint is first app listed....Tested OK on 3 different installs of 10158...