1)
      this.goEnd();
    if (argv[0] === "TOGGLE_CONTENT" && argc === 1)
      this.toggleContent();
    if (argv[0] === "SET_CURSOR" && argc === 2)
      window.location.hash = "#" + argv[1];
    if (argv[0] === "GET_CURSOR" && argc === 1)
      this.postMsg(win, "CURSOR", this.idx + "." + this.step);
    if (argv[0] === "GET_NOTES" && argc === 1)
      this.postMsg(win, "NOTES", this.getNotes(this.idx));
  }

  Dz.toggleContent = function() {
    // If a Video is present in this new slide, play it.
    