From: address@is.invalid   
      
   JJ,   
   >> Can you tell me how I can get to such a configuration screen ?  I do not   
   >> see   
   >> any button, tab or other control even /hinting/ it it. :-\   
   >   
   > It behind the Advanced button on the Options dialog.   
      
   > Uh... a "Config Editor" button on General tab of Advanced section.   
      
   Thanks.   
      
   It turns out I was pretty-much staring myself blind at the tabs in the email   
   pane (expecting some kind of "file" -> "configuration drop-down menu - or   
   some textfield where I could enter that "about:config" string), while fully   
   overlooking the "hamburger menu" there - even though my FF 52 also has one.   
   :-(   
      
   Regards,   
   Rudy Wieser   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)