differences between the Pyu script and the script used to write Mon and Burmese, scholarly consensus attributes the origin of the Burmese script to Mon. The first attestation of written Burmese is an inscription from 1035 CE, (or 984 CE, according to an 18th century recast inscription). From then on, the Mon–Burmese script further developed in its two forms, while staying common to both languages, and only a few specific symbols differ between the Mon and Burmese variants of the script. The calligraphy of modern Mon script follows that of modern Burmese. Burmese calligraphy originally followed a square format but the cursive format took hold in the 17th century when popular writing led to the wider use of palm leaves and folded paper known as parabaiks. The script has undergone considerable modification to suit the evolving phonology of the Burmese language, but additional letters and diacritics have been added to adapt it to other languages; the Shan and Karen alphabets, for example, require additional tone markers. The Mon–Burmese script has been borrowed and adapted twice by Tai peoples. Around the 14th century, a model of the Mon–Burmese script from northern Thailand was adapted for religious purposes, to correctly write Pali in full etymological spelling. This resulted in the Tai Tham script, which can also be described as a homogenous group of script variants including the Tham Lao, Tham Lanna, Tham Lü and Tham Khün variants. Around the 15th or 16th centuries, the Mon–Burmese script was borrowed and adapted again to write a Tai language of northern Burma. This adaptation resulted in the Shan alphabet, Tai Le script, Ahom script and Khamti script. This group of scripts has been called the "Lik Tai" scripts or "Lik" scripts, and are used by various Tai peoples in northeastern India, northern Myanmar, southwestern Yunnan, and northwestern Laos. According to the scholar Warthon, evidence suggests that the ancestral Lik-Tai script was borrowed from the Mon–Burmese script in the fifteenth century, most probably in the polity of Mong Mao. However, it is believed that the Ahom people had already adopted their script before migrating to the Brahmaputra Valley in the 13th century. Furthermore, The scholar Daniels describes a Lik Tai script featured on a 1407 Ming dynasty scroll, which shows greater similarity to the Ahom script than to the Lik Tho Ngok (Tai Le) script. Languages The script has been adapted for use in writing several