Written by two scribes, each of them have applied a separate size of written area and thus a separate number of lines per page.
Part I: On fols 1r-15r and 39r:19-58v the written area measures 280/290 mm x 190/195 mm and there are 32 lines or 16 staffs per page.
Part II: On fols 15v-39r:19 the written area measures 265/270 mm x 175/185 mm and the pages have 38 lines or 16 staffs per page.
Fols 15v and 39r, however, have 29 lines per page, while 17r, 18r, 24v and 26v have 27 lines per page.
Pricking in the outer margins can be seen where whole leaves are preserved.
The first hand can be identified as the one of Jón Þorláksson who worked as a scribe in the period c. 1450-1478. He wrote fols 1r-15r and 39r:19-58v. He also made corrections and wrote the rubrics.
The other, unknown, scribe wrote fols 15v-39r:19.
On fol. 6r a red, green and golden initial (six lines) featuring a palmette in red and blue is found.
On fol. 15v a large littera florissa in ten lines with foliage in gold, red, green and azure is found.
Part I features green, blue, red, ruby or gold lombards in one to five lines. Several have palmettes in a contrasting colour.
Part II has gold, blue, green or red lombards taking up two to five lines.
Red line fillers and rubrics.
Part I (1r-15r, 39r:19-58v): Square notation in black four-line staves with a clef; 40v-41v, however have a square notation in red four-line staves with a clef.
Part II (15v-39r:19): Square notation in red four-line staves with a clef. Recitation: c + s.