2. Will you kindly give us details on Granta Lipi?
The language Sanskrit has no alphabets in written form. What it has instead is only phonetics. It is because of this, Sanskrit Language has borrowed structures of alphabets from Devanagiri(Hindi) and Granta. Whereas the Devanagiri was created in North India, the Granta was the structure of alphabets created in South India for Sanskrit with Tamil characters as base. The type and style of Granta Lipi has in case of most of the characters similarity with that of Tamil.
Since Sanskrit has no structure of alphabets called ‘lipi’, the hymns of Sanskrit Vedas are called “Ezhudha Kilavi”(Book not in written form).
The Granta Lipi is also waning out from the scene for the nonce. That the Aagamas whatever that are available are all found only in Granta Lipi testifies to the fact that the Aagamas were originally in Tamil only and later copied by vested interest to Sanskrit. Only for this reason the Vaidigas(followers of Sanskrit Vedas) have scant respect for Aagamas. All these go to prove that Aagamas were originally available only in Tamil.
You may have a doubt running in your mind at this as to why then the Aagamas in Tamil are not available at present? The answer is that there had been two great deluges which had swept the terrain south of Kanyakumari whereby the original Tamil Aagamas were devastated and in its place the copied text of Aagamas in Sanskrit(Granta Lipi) escaped to stay beyond Tamil region.