Yuichiro Hanada a31e41f538 am 6156892b: Add computeChildrenPosition and simplify writePlacedNode.
* commit '6156892b7e19aed29475c3ff6e439b05cf0b14c4':
  Add computeChildrenPosition and simplify writePlacedNode.
2013-09-06 08:01:57 -07:00
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