title: How do I revert a sparse-tree view in org mode?
body: <p>I am learning org mode, and just found out about sparse trees (C-c / t and its kin). How can I go back to the original, unsparse, view of my org document?</p>
  
  <p>I found out by trial and error that TAB-cycling the top node works, is there a better way?</p>