@talk72000,
I didn't ask, Talk. I merely pointed out that you were misled.
In a pretend mode, [Stamp your foot and say], "You will not leave this room until I say so!"
Sounds pretty natural, does it not?
'will', in one of its meanings, holds the same nuance, the imperial attitude, as 'shall'.
'shall', in one of its meanings, also holds the prognosis or predictive nuance that 'will' holds.