About Reaching
The active manikin can reach for a target, without you needing to change its posture segment by segment.
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Reach—A manikin segment or point on the manikin reaches for a target point in the scene. You can create a reach constraint between the manikin segment and the target.
Reach—A manikin segment or point on the manikin reaches for a target point in the scene. You can create a reach constraint between the manikin segment and the target.• 
Reach Envelopes—Shows the volume that a person can reach while in any posture during a task.
Reach Envelopes—Shows the volume that a person can reach while in any posture during a task.