The Harvard-Kyoto Convention's a system for transliterating in ASCII the Sanskrit language and other languages that use the Devanāgarī script. It's predominantly used informally in e-mail, and for electronic texts. Vowels अ आ इ ई उ ऊ ए ऐ ओ औ a A i I u U e ai o au Sonorants ऋ ॠ ऌ ॡ R RR lR lRR Anusvāra/Visarga अं अः M H Consonants क ख ग… (More on Harvard-kyoto)