code: public String buildStringOfHierarchy() {
  		StringBuilder sb = new StringBuilder();
  
  		getMainContentContainer().buildStringOfHierarchy(sb, 0, state.getCurrentPointer().resolve());
  
  		return sb.toString();
  	}
docs: Useful when debugging a (very short) story, to visualise the state of the
  story. Add this call as a watch and open the extended text. A left-arrow mark
  will denote the current point of the story. It's only recommended that this
  is used on very short debug stories, since it can end up generate a large
  quantity of text otherwise.