The Sticky handle allows an arbitrary transformation which is tied
strongly to the space of an object.  It can be used to drive
parameters that are described spatially, and will affect the objects
own position, but whose effect will not be predictable.

A sample of its use can be found with the Sticky Object.
described interactively.

Parameters:

    group_pivot - Whether to use the group centroid as the pivot.
    input       - A group field.  The centroid of this group is used
                  as the default origin.
    onoff       - Whether the handle is enabled, 1 means enable.
    px, py, pz  - The pivot of the transform.
    rx, ry, rz  - The Euler angles of the transform in degrees.
    sx, sy, sz  - The scale factors of the transform in each axis.
    trs_order   - The translate/rotate/scale order.
    tx, ty, tz  - The translate amount.
    uniform_scale - A uniform scale factor.
    xyz_order   - The order in which the rx, ry, and rz angles should
                  be combined.

See Also: Pivot, Rotate, Xform
