Lets you draw a freehand Bezier curve by clicking in the scene to create anchors. You can also click-drag to create anchors
and tangents.
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Determines the manipulator that appears when you select an anchor and then 
-click.
Determines how you can manipulate anchor tangents.
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When manipulating a tangent, the tangent remains unbroken and both sides of the tangent are weighted equally when one side
is scaled.
Useful for creating smooth, symmetrical curves.
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When manipulating a tangent, the tangent remains unbroken, but only the selected side is scaled.
Useful for creating smooth curves weighted to one side.
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When manipulating a tangent, the tangent breaks and only the selected side is scaled.
Useful for creating sharp points.
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