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Improvements to the Shape Authoring tools give you more control to create, tweak, and correct animations in a detailed way. The tools help you make more complex animations for areas where high levels of detail are required, like facial animations. They also give you an easier way to manage corrective blendshape animations on top of rig-based deformation. The new tools in the Shape Editor include Merge Targets, Clone Target, Combination shapes, and show/hide in-between targets.