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Attachments (IK)

In biped animation, the biped hands and feet can be linked to the world, another object in the scene, or to the biped's own body. This linking is also called IK attachment. Attachment can be blended: this lets you start with one attachment and end with another. For example, if the biped is catching a ball, you can start with the hand in body space and end with the hand in the coordinate space of the ball.