1. Most used
   1. Insert Topic
      1. ENTER
   2. Insert Subtopic
      1. TAB
2. Frequently Used
   1. Undo
      1. Ctrl+Z
   2. Insert Relationship
      1. Ctrl+L(for LINK)
3. Often Used
   1. Insert Parent Topic
      1. Ctrl+Enter
   2. Insert Topic Before
      1. Shift+Enter
   3. Select Children Topics
      1. Ctrl+Alt+A
4. Learn Later
   1. Zoom In
      1. Ctrl++
   2. Zoom Out
      1. Ctrl+-
   3. Edit Topic
      1. F2
   4. Drill Down
      1. F6
   5. Drill Up
      1. Shift+F6
   6. Quick Add Priority Markers
      1. Ctrl+1,2,3,4,5,6
5. Learn Soon
   1. Cut
      1. Ctrl+X
   2. Go to Root Topic/Top of Text
      1. Ctrl+Home
   3. Select Brother Topics
      1. Ctrl+Shift+A
   4. Insert Boundary
      1. Ctrl+B
6. Others
   1. Obscure
      1. Learn if useful