The khmere or Cambodjan writing had several forms; the ancient includes the period between the 5 Th and 9 Th century of our era. The Angkor writing traduced by forms properly Cambodjanes, which derives the Siamaican and Laotian (from Laos). The Khmere writing known three successive forms, characterised by round forms, then squared and finally mixed, during the classical period that extended from the 9 Th, 14 Th century. The modern writing in its three aspects appeared in the second part of the 14 Th century: The Mul, Kham and the Jrien. The first ones were reserved to sacred text's calligraphy; the third was cursive and was profanely used.