Undo/Redo

• u in normal mode undoes the last change

• Ctrl-r in normal mode redoes an undo change

• You can view the undo list using :undolist

• You can go back a number of changes by using :undo <num> where num is how many changes to undo

• You can also use time based commands to go back and forth

  • :earlier 4m will take you back to the state of the buffer by 4 minutes
  • :later 45s will take you later by 45 seconds