        Lyra’s brain felt like it was going to melt.  The book he had shown her had used both the strong letters and the weak letters.  It appeared that the strong letters were used at the beginning of each line, and to give the names of the characters.  Clearly they indicated something of importance.  However, the wagon had been labeled in all strong letters—which probably meant it was very important—and the names of the months had been, too.  Four strong letters.  Did they value wagons and their calendars that highly?