title: Nano - File already being edited - How do I switch to the open file?
body: <p>I have a tendency to miss-type while trying to Ctrl-X to exit nano.</p>
  
  <p>Every now and then I'll try to re-open the file and get the Nano "File xxx is being edited". How do I switch back to the open file? And also, what am I miss-typing to cause this to happen?</p>