tree a1f1fac70c411988b784b3effc7dd2df19f991c4
parent 73cb2c3f3d6e7f46ebecb8e8b76c8f0c8177c42e
author buyingyi <buyingyi@gmail.com> 1374282254 -0700
committer buyingyi <buyingyi@gmail.com> 1374282254 -0700

address Vinayak's comments on open/close of vertex