title: How could I access the source code of a .one OneNote file?
body: <p>How could I access the source code of a .one OneNote file?</p>
  
  <p>I've tried to rename the .one file to .zip as what happens with .doc files in order to access their source code, but .one doesn't seem to work like that.
  Also, I've tried to open it with Notepad++, but it isn't in a plain-text format.</p>
  
  <hr>
  
  <p><em>I regard this as a programming question because:
  I'm using content-editing-automation scripts (e.g. RegEx-related find and replace scripts). Accessing the source code of .one files helps me apply bulky automated edits on their content Using RegEx.</em></p>