Borassus flabellifer
Javanese script has been written with numerous media that have shifted over time. Kawi script, which is ancestral to Javanese script, is often found on stone inscriptions and copper plates. Everyday writing in Kawi was done in palm leaf form locally known as "lontar", which are processed leaves of the tal palm ("Borassus flabellifer"). Each "lontar" leaf has the shape of a slim rectangle 2.8 to 4 cm in width and varied length between 20 and 80 cm. Each leaf can only accommodate around 4 lines of writing, which are incised in horizontal orientation with a small knife and then blackened with soot to increase readability. This media has a long history of attested use all over South and Southeast Asia.