Old Persian cuneiform is a semi-alphabetic cuneiform script that was the primary script for Old Persian. Texts written in this cuneiform have been found in Iran, Armenia, Romania (Gherla), Turkey, and along the Suez Canal. They were mostly inscriptions from the time period of Darius I, such as the DNa inscription, as well as his son, Xerxes I. Later kings down to Artaxerxes III used more recent forms of the language classified as "pre-Middle Persian".