The other was "Hieroglyphic Luwian", which was written in a unique native hieroglyphic script. The word "hieroglyphics" refer to a hieroglyphic script. Many Mayan temples were inscribed with hieroglyphic texts. Old, Middle, and Late Egyptian were all written using both the hieroglyphic and hieratic scripts. The result was a set of thirteen phonetic values for hieroglyphic and demotic signs. He also recognized the relationship between hieratic and hieroglyphic scripts. It contains some of the earliest hieroglyphic inscriptions ever found. Both hieroglyphic and demotic began to disappear in the third century AD. He is known from two inscriptions in Hieroglyphic Luwian. The doorway was stamped with indistinct cartouches (oval seals with hieroglyphic writing). Like Stela 84, it bears an inscription that is a meaningless imitation of hieroglyphic writing. Ritual decapitation is well attested from Maya hieroglyphic texts throughout the Classic period. The Mesoamerican writing tradition reached its height in the Classic Maya Hieroglyphic script. The ankh may have been used decoratively more than any other hieroglyphic sign. The decipherment and classification of Hieroglyphic Luwian was much more difficult.