1. new project
   1. cd myproject/
   2. hg init
   3. hg add
2. daily use
   1. hg add
   2. hg remove
   3. hg rename xx1 xx2
   4. hg commit -m "chang abc to def"
   5. BROWSE
      1. hg status
      2. hg log
      3. hg heads
      4. hg parents
   6. REVERT
      1. hg revert
      2. hg rollback
3. Branch
   1. hg branch newfeature
   2. hg update -r newfeature2
      1. 切換到newfeature2分支
   3. hg branches
      1. list all branches
4. Tag
   1. hg tag version1.0
   2. hg update -r version1.1
   3. ht tags
5. server
   1. hg pull REMOTE
   2. hg push REMOTE
   3. hg merge