BabelStone Tibetan is a Unicode Tibetan font. It is a modification and extension of the Jomolhari font. Jomolhari is a Bhutanese style calligraphic uchen Tibetan script font. BabelStone Tibetan is based on Jomolhari Version alpha 0.003c 2006, which is quite old, and so does not include sixteen characters added to the Tibetan block in Unicode versions 5.1 (2008), 5.2 (2009) and 6.0 (2010). BabelStone Tibetan adds support for these sixteen characters, and also extends the font to cover many additional stack clusters, including non-standard clusters that are used for writing Tibetan shorthand contractions and some unusual clusters that were used for transcribing Tangut. BabelStone Tibetan has an extremely large line height in order to allow for very high and deep stacks found in some religious texts. BabelStone Tibetan Slim is almost exactly the same as BabelStone Tibetan, but has a small line height; it is suitable for ordinary modern Tibetan text, but some stacks for Sanskrit may be cropped at the top and/or bottom.