r̥, r̥̄, l̥, l̥̄, used to write Sanskrit words, are treated as vowels. They are called semi-vowels and are phonetically closer to vowels in Malayalam and in Classical Sanskrit where Panini, the Sanskrit grammarian, groups them with vowel sounds in his sutras. (see Proto-Indo-European language and Vedic Sanskrit). The letters and signs for r̥̄, l̥, l̥̄ are very rare, and are not considered as part of the modern orthography. See also the May 2001 version (PDF).
r̥, r̥̄, l̥ l̥̄, used to write Sanskrit words, are treated as vowels. They are called semi-vowels and are phonetically closer to vowels in Malayalam and in Classical Sanskrit where Panini, the Sanskrit grammarian, groups them with vowel sounds in his sutras. (see Proto-Indo-European language and Vedic Sanskrit). The letters and signs for r̥̄, l̥, l̥̄ are very rare, and are not consid,ered as part of the modern orthography. See also the May 2001 version (PDF).