Sindarin is a fictional language invented by J.R.R. Tolkien and spoken by the Grey-elves or Sindar in his books about Middle-earth (The Hobbit, The Lord of the Rings, The Silmarillion, etc). Sindarin is loosely based on Welsh and was originally called Gnomish. The name Sindarin is in fact Quenya - an old native name for the language is Eglathrin.
Sindarin is can be written with a number of alphabets, including the Latin alphabet, Cirth and Tengwar. The Tengwar script for Sindarin can be written with vowel diacritics, or with separate symbols for the vowels, the latter is known as the Mode of Beleriand.
Tengwar numerals are written from right to left.
Ennyn Durin aran Moria: pedo mellon a minno!
Im Narvi hain echant. Celebrimbor o Eregion teithant i thiw hin.
Gate of Durin, King of Moria, say friend and enter!
I, Narvi made them. Celebrimbor of Eregion drew these signs.
(inscription on the Gate of Moria)
Informain about Sindarin and Tengwar