IKControl.Pole

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The Pole is an optional Instance that gives you control over how intermediate parts in your character should bend. It can be anything that has a position in the world, such as BasePart, Attachment, Bone, Motor6D. It is by default nil. When you specify it, the underlying solver will make the parts bend towards it. When it is nil, the solver will try to make elbows and knees bend appropriately based on the limb of the character. The limb will be "Arm" when you select as EndEffector either the LeftHand or RightHand and as ChainRoot the corresponding LeftUpperArm or RightUpperArm, and it will be "Leg" when you select as EndEffector either the LeftFoot or RightFoot and as ChainRoot the corresponding LeftUpperLeg or RightUpperLeg. In all other cases, if you don't specify a pole, the chain might not bend as you expect.