ELX meaning in Regional ?

Elamite, also known as Hatamtite, is an extinct language that was spoken by the ancient Elamites. It was used in present-day southwestern Iran from 2600 BC to 330 BC. Elamite works disappear from the archeological record after Alexander the Great entered Iran. Elamite is generally thought to have no demonstrable relatives and is usually considered a language isolate. The lack of established relatives makes its interpretation difficult.

A sizeable number of Elamite lexemes are known from the trilingual Behistun inscription and numerous other bilingual or trilingual inscriptions of the Achaemenid Empire, in which Elamite was written using Elamite cuneiform (circa 400 BCE), which is fully deciphered. An important dictionary of the Elamite language, the Elamisches Wörterbuch was published in 1987 by W. Hinz and H. Koch. The Linear Elamite script however, one of the scripts used to write the Elamite language circa 2000 BC, has remained elusive until recently.