Common Sith represented a script that evolved from the ancient hieroglyphic system employed by the Sith.
Over numerous generations, Sith scribes refined and transformed the original hieroglyphs, resulting in the creation of several simplified writing systems. Although certain scribes enhanced the hieroglyphic system, developing a unique style for religious contexts, Common Sith emerged as a replacement for everyday communication. After the Dark Jedi unearthed the ancient civilization of King Adas's Sith Empire, the Sith expanded the use of Common Sith, employing it to transcribe not only their native tongue but also Galactic Basic Standard.
In the twilight of his life, Darth Vader featured Common Sith inscriptions on the chest panel of his distinctive armor.
The sequence (aleph lamed zayin shin) required to override the security droid protecting the residential sector of the Imperial Palace in 16 ABY was encoded using Common Sith.
The symbols displayed on Darth Vader's control panel, which were later identified as Common Sith, draw inspiration from Hebrew characters. Many of these characters are altered or inverted on his control panel. Subtle variations in these symbols exist between The Empire Strikes Back and Return of the Jedi. These same symbols can also be observed on a speeder bike artifact showcased in the Star Wars: The Magic of Myth exhibit. The actual Hebrew writing system is classified as an imperfect abjad.