Begins adjusting the player character's angle of vertical movement downward. Affects only the angle or slope of movement for swimming or flying; has no immediately visible effect if the player is not moving, but alters the trajectory followed as soon as the player begins moving. Continuously adjusts pitch until the minimum angle is reached or PitchDownStop() is called.
Used by the PITCHDOWN binding.
See also Movement functions.
Signature:
PitchDownStart()
This function is protected and can only be called by the Blizzard user interface