linguistic:paraphrasing, structural:reformatting
Transmission

The emphasis in this transmission is on the "proper articulation and pronunciation of the Vedic sounds", as prescribed in the Shiksha, the Vedanga (Vedic study) of sound as uttered in a Vedic recitation, mastering the texts "literally forward and backward in fully acoustic fashion." Houben and Rath note that the Vedic textual tradition cannot simply be characterized as oral, "since it also depends significantly on a memory culture." The Vedas were preserved with precision with the help of elaborate mnemonic techniques, such as memorizing the texts in eleven different modes of recitation (pathas), using the alphabet as a mnemotechnical device, "matching physical movements (such as nodding the head) with particular sounds and chanting in a group" and visualizing sounds by using mudras (hand signs). This provided an additional visual confirmation, and also an alternate means to check the reading integrity by the audience, in addition to the audible means. Houben and Rath note that a strong "memory culture" existed in ancient India when texts were transmitted orally, before the advent of writing in the early first millennium CE. According to Staal, criticising the Goody -Watt hypothesis "according to which literacy is more reliable than orality," this tradition of oral transmission "is closely related to Indian forms of science," and "by far the more remarkable" than the relatively recent tradition of written transmission.