what's the use of "N" in a AT?

[dhisky]

Pag neutral ata naka disengage sya sa transmission kaya pag naka neutral ka puede ka mag rollfoward o backward need mo apakAn ang brake o engage ang parking break. Pag naka park naka engage sa transmission kaya hindi gagalaw sasakyan yun nga lang pag nabangga masisira ang transmission ata

hey thanks.

So if naka "P" ka sa downhill or uphill without a handbreak may possibility rin na masira since naka engage sya transmission? and your car is moving forward / backard?