The glyph outlines origin from Yasna 10 of the manuscript of Tehran University Library, nr. 11263. The scanned manuscript can be viewed on
wwww.avesta-archive.org.

In the manuscript long [i] and long [u] do not differ, as well as both short and long [o]. Nevertheless, long [u] and short [o] are mapped in the font. Their outlines follow the script style of the manuscript.

The letters for [θ] and [x] have two different shapes in the manuscript, so I have added one of each of them into the Private Use Area.

Most of ligatures encountered in the manuscript have been mapped as well in the Private Use Area range.

The punctuation of the manuscript includes only two signs from the Avestan Unicode range: the centered period and the so called "large two dots over one dot", so only these two signs were mapped in the font.