The Garwian writing system, a type of script, was utilized by the Garwian Unity in the Unknown Regions; this nation belonged to the Garwian species. As of 19 BBY, the monitors within the Solitair planetary security center—situated below the surface of the Garwian homeworld—showed text in Garwian script. The Chiss Commodore Ar'alani was unable to decipher this writing.
Star Wars: The Ascendancy Trilogy, specifically the initial book Thrawn Ascendancy: Chaos Rising by Timothy Zahn, featured Garwian script in flashback sequences.