Orthography
Khmer is written from left to right with multiple levels of character stacking possible. Originally, there were 35 consonants, but only 33 are now in use for modern Khmer. The vowel system consists of independent vowels and dependent vowels. The dependent vowels have two registers of phonemes to account for the that fact that there are fewer vowel graphemes for the vowel phonemes in the spoken language. Khmer also uses diacritics that further enhance the pronunciation of words.
Read more about this topic: Khmer Script