"There is relatively little writing in the Star Wars universe; most telecommunication is by audio or audio/visual transmission. Where there is writing, such as on display screens in vehicles or occasionally on the side of a building, it is often unclear how the writing relates to the languages being used, although the Aurebesh script is claimed to be the definitive method of writing Basic."
(Taken from Wikipedia article on Star Wars Languages)
Image:Aurebesh_chart