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Bind bones to shape points
Depending on the configuration of an IK shape,
you may find that the stroke of the shape does not distort in a
pleasing way when moving the armature.
By default, the control
points of a shape are connected to the bone that is nearest to them.
The Bind tool allows you to edit the connections between individual bones
and the shape control points. This lets you control how the stroke
distorts when each bone moves for more pleasing results.
You
can bind multiple control points to a bone and multiple bones to
a control point. Clicking a control point or a bone with the Bind
tool displays the connections between the bones and control points.
You can then change the connections in a variety of ways.
To highlight the control points connected to a bone, click
the bone with the Bind tool  .
The
connected points are highlighted in yellow while the selected bone
is highlighted in red. Control points connected to only one bone
appear as squares. Control points connected to more than one bone
appear as triangles.
To add control points to a selected bone, Shift-click an
unhighlighted control point.
You can also Shift-drag to select
multiple control points to add to the selected bone.
To remove control points from the bone, Ctrl-click (Windows)
or Option-click (Macintosh) a control point that is highlighted
in yellow.
You can also Ctrl-drag (Windows) or Option-drag
(Macintosh) to remove multiple control points from the selected
bone.
To highlight the bones connected to a control point, click
the control point with the Bind tool .
The
connected bones are highlighted in yellow while the selected control point
is highlighted in red.
To add other bones to the selected control point, Shift-click
a bone.
To remove a bone from a selected control point, Ctrl-click
(Windows) or Option-click (Macintosh) a bone that is highlighted
in yellow.
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