Mayan languages system developed by the Academia de Lenguas Mayas de Guatemala (ALMG). Orthographies for the languages of Mexico are currently being developed by the Instituto Nacional de Lenguas Indígenas (INALI). The pre-Columbian Maya civilization developed and used an intricate and fully functional writing system, which is the only Mesoamerican script that can be said to be almost fully deciphered. Earlier-established civilizations to the west and north of the Maya homelands that also had scripts recorded in surviving inscriptions include the Zapotec, Olmec, and the Zoque-speaking peoples of the southern Veracruz and western Chiapas area—but their scripts are as yet largely undeciphered.
Mayan languages from that branch at a much later date than proposed by Kaufman. In the Archaic period (before 2000 BCE), a number of loanwords from Mixe–Zoquean languages seem to have entered the proto-Mayan language. This has led to hypotheses that the early Maya were dominated by speakers of Mixe–Zoquean languages, possibly the Olmec. In the case of the Xincan and Lencan languages, on the other hand, Mayan languages are more often the source than the receiver of loanwords. Mayan language specialists such as Campbell believe this suggests a period of intense contact between Maya and the Lencan and Xinca people, possibly