[2] The Anga Script is mentioned in an ancient Sanskrit language Buddhist book, the Lalitavistara, which names Anga Lipi relatively early in the list of 64 scripts known to the Buddha.

Arthur Coke Burnell thought that some of the sixty-four scripts mentioned in the Lalitavistara were mythical, but he considered some, including Dravid, Anga and Banga, to be real, though not appearing as distinct alphabets until the 9th or 10th century CE.

Anga Lipi and Bengali script might have been derived from Brahmic, with some regional characteristics.

[4] This supports the belief that the development of local characteristics in alphabets was continuing from earlier times.

[5] It reflects the early development of local variants of Indian alphabets.