In fact, the hieroglyphic script and its relatives are phonetic, ... Young's breakthrough came when he focussed on a set of hieroglyphs surrounded by a loop, called a cartouche.

Scholars translating a Roman victory stele, erected in the Temple of Isis at Philae in Egypt in 29 BC, have discovered the Roman Emperor Octavian Augustus’ name inscribed in a cartouche – an ...

This cartouche turned out to be the royal road to a full translation of Egyptian hieroglyphics, because, as Singh explains, it "showed that the scribes sometimes exploited the rebus principle ...