function getTitle (id) {
      const { langList } = strings;
      const item = langList.find((itm) => {
        return itm.id === id;
      });
      return item ? item.title : id;
    }
@param {"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} id
@returns {string}