| Fixed bugs related to parents and children. Implemented to synchronize with mxGraphModel in CollaborationViewer. | 
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| src/org/ntlab/animations/MagnetRONAnimation.java | 
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| src/org/ntlab/deltaViewer/CollaborationViewer.java | 
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| src/org/ntlab/deltaViewer/MagnetRONViewer.java | 
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