>What exactly you're pressing to give the button a focus? I press Shift < but it just puts it in the textbox.

>Normal hotkeys would work on Alt + letter combination.

You are correct.
It does not work from the textbox.
Only if the focus is on the other buttons.

>BTW, did you return back to US? AFAIK your friend Tobi (?) Grienfield (?) mentioned you.
I am in Jerusalem.
Kew Gardens is History.