let dbg = document.querySelector('#debugMsg');
    if(dbg){
      /* This can inadvertently influence our flexbox layouts, so move
         it out of the way. */
      D.append(document.body,dbg);
    }
  })();
  /* Returns a list of DOM elements which "frame" the chat UI. These
     elements are considered to _not_ be part of the chat UI and that
     info is used for sizing the chat UI. In chat-only mode, these are
     the elements that get hidden. */
  const GetFramingElements = function() {
    return document.querySelectorAll([
      "body > header",
      "body > nav.mainmenu",
      "body > footer",
      "#debugMsg"
    ].join(','));

    /**
       Toggles the given message between its parsed and plain-text
       representations. It requires a server round-trip to collect the
       plain-text form but caches it for subsequent toggles.

       Expects the ID of a currently-loaded message or a
       message-widget DOM elment from which it can extract an id.
       This is an aync operation the first time it's passed a given
       This is an async operation the first time it's passed a given
       message and synchronous on subsequent calls for that
       message. It is a no-op if id does not resolve to a loaded
       message.
    */
    cs.toggleTextMode = function(id){
      var e;
      if(id instanceof HTMLElement){

        aftersend:function(){
          delete e.$isToggling;
          Chat.ajaxEnd();
        }
      });
      return true;
    };
    

    /** Given a .message-row element, this function returns whethe the
        current user may, at least hypothetically, delete the message
        globally.  A user may always delete a local copy of a
        post. The server may trump this, e.g. if the login has been
        cancelled after this page was loaded.
    */
    cs.userMayDelete = function(eMsg){

      optAu.theLegend.addEventListener('click',function(){
        D.toggleClass(Chat.e.activeUserListWrapper, 'collapsed');
        if(!Chat.e.activeUserListWrapper.classList.contains('collapsed')){
          Chat.animate(optAu.theList,'anim-flip-v');
        }
      }, false);
    }/*namedOptions.activeUsers additional setup*/
    /* Settings menu entries... they are presented in the order listed
    /* Settings menu entries... the most frequently-needed ones "should"
       (arguably) be closer to the start of this list. */
       here, so the most frequently-needed ones "should" (arguably) be
       closer to the start of this list. */
    /**
       Settings ops structure:

       label: string for the UI

       boolValue: string (name of Chat.settings setting) or a function
       which returns true or false. If it is a string, it gets