tree 49bc1805934f65d530cddc7eb730e1cb07f78f9f
parent 3166f063b5a8b1634667d951f21c42c5e227591d
author Hao Zhu <haozhu233@gmail.com> 1498520495 -1000
committer Hao Zhu <haozhu233@gmail.com> 1498520495 -1000

update docs for collapse rows.