A poster indicates how Syrian soil gave much of the world its alphabet. This tablet seems to be showing it.
The museum houses some very ancient writing, one of them is claimed to be the oldest "alphabet" in existence. It is called the alphabet of Ugarit, 14th century BC, and formed the basis of the Phoenician alphabet, then the Greek and from that all European languages. It was read from left to right, consisting of 30 letters (Bradt guide).