The Tibetan block contains characters used in the Tibetan script, which is used for writing the Tibetan language as well as Dzongkha (the national language of Bhutan), Sikkimese, and other languages of the Tibetan cultural sphere. The Tibetan script is an abugida, with consonants carrying an inherent vowel sound that can be modified with diacritics. This block includes characters for consonants, vowels, numerals, and a variety of marks used in religious and literary texts. The script is historically significant, having been developed in the 7th century for translating Buddhist scriptures..