A pitch happy bird with lots or control surface deflection and reversible motor. For thrashing around the sky in stalled maneuvers.

Motor controls uses normal throttle controls when the retracts which is down (toward you).

But flip the retract switch away from you and the esc will allow the motor to go from negative 100% power in the normal idle position, 100% power (normal) at the normal full throttle position, and there is a idle deadband right in the middle of the throttle travel