title: How to make a JS script run in all tabs from a given window in Firefox?
body: <p>I am a newbie and a Firefox user.</p>
  
  <p>I want to change the tab's titles to something that's easier for me to read. On a given tab, I can easily modify in the console <code>document.title</code> to a name output by my script.</p>
  
  <p><strong>Is there a way to make this script run in all tabs opened in a given window, or must I open the console in each tab and run the script there?</strong></p>
  
  <p>If possible, I'd prefer answers that don't need SDK, that can only use the regular console/options from Firefox.</p>