Swash Mixing (Helicopter); Example Of Use: Using To Correct Bad Roll Tendencies - FUTABA T10J Instruction Manual

This mixing is used to correct the bad tendencies
of the swash plate in the aileron direction and
elevator direction relative to aileron, elevator, and
pitch operations. It adjusts the rate of the direction
that requires correction so that the servo operates
smoothly in the proper direction relative to each
operation.