This function moves the specified part to the specified location via inverse kinematics rather than moving it there directly, to ensure any joints, Constraint|constraints, or collisions that part is participating in remain physically satisfied. Currently this function is only available in Studio to Plugin|plugins, as it currently conflicts with the physics of a running game.

Translate stiffness is a number between 0 and 1 specifying how agressively to match the part’s position to the position part of the target CFrame.
Rotate stiffness is a number between 0 and 1 specifying how agresively to match the part’s rotation to to the rotation part of the target CFrame.
For example:

• If translate stiffness and rotate stiffness are both equal to 1, then the part will be moved exactly to the target CFrame regardless of what physical constraints there are on it.
• If translate stiffness and rotate stiffness are both equal to 0.5, then the part will try to move to exactly the target CFrame, but may be pushed out of the way by physical constraints on it.
• If translate stiffness and rotate stiffness are both equal to 0, then the target CFrame will be ignored and physical constraints will be solved for the object at the position where it was.