Kufic is a clean; geometric style of Arabic writing; with a very visible rhythm and a stress on horizontal lines. Vowels are sometimes noted as red dots; consonants are distinguished with small dashes to make the texts more readable. A number of Qur'ans written in this style have been found in the Mosque at Kairouan; in Tunisia. Kufic writing also appears on ancient coins. The Maghribi script and its Andalusi variant are less rigid versions of Kufic; with more curves.