alice-teacher Question about Point of View

[Funk, Philip]

                Hi All,
Each object in an Alice world has a point of view comprised of two components: the object's position in the world (left right, up down, forward back) and the object's orientation (yaw, pitch, roll).  In addition, there is a seventh number as shown in the picture below.
                [cid:image001.png at 01CD9EFC.EEFD7E70]
                Does anyone know what the last number (1 in this example) means and how it is used?
                Thanks,
                                P. Funk

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