Found an illustrated booklet about the "Parade at Persepolis", part of a celebration the Shah of Iran put on in 1971 that saw a lot of heads of state, & also a few avant garde artists, including Peter Brooks, who produced a play written especially for this event by Ted Hughes (in a "language" he invented), "Orghast", later the subject of a fascinating book by A C H Smith.

Some Orghast words: hoan, 'light'; bullorga, 'darkness'; ombolom, 'womb'; glittalugh, 'stars'; gleorghasta, 'the vulture'; oarglakris, 'the eagle'; boh, 'death'.