code: public void clear() {
          setElementNames(new StringStack(STRINGSTACK_SIZE));
          setContentBuffer(new StringBuilder());
          setSpecificElement(false);
          minLat = 0;
          maxLat = 0;
          minLon = 0;
          maxLon = 0;
          creator = null;
          version = null;
          name = null;
          desc = null;
          link = null;
          linkText = null;
          time = null;
          authorName = null;
          email = null;
          authorLink = null;
          authorLinkText = null;
          keywords = null;
      }
docs: Initialisation of all the indicators used to read the document.