 There are numerous other Brahmic-derived writing systems among Southeast Asian Austronesians, usually specific to a certain ethnic group.Notable examples include Balinese, Batak, Baybayin, Buhid, Hanunó'o, Javanese, Kulitan, Lontara, Old Kawi, Rejang, Rencong, Sundanese, and Tagbanwa.They vary from having letters with rounded shapes to letters with sharp cuneiform-like angles; a result of the difference in writing mediums, with the former being ideal for writing on soft leaves and the latter ideal for writing on bamboo panels.