Calligraphers in the early Islamic period used a variety of methods to transcribe Qur’an manuscripts. Arabic calligraphy became one of the most important branches of Islamic Art. Calligraphers came out with the new style of writing called Kufic. Kufic is the oldest calligraphic form of the various Arabic scripts. It consists of a modified form of the old Nabataean script. The name of the script derives from Kufa, a city in southern Iraq which was considered as an intellectual center within the early Islamic period. Kufic is defined as a highly angular form of the Arabic alphabet originally used in early copies of the Qur’an. Sheila S. Blair suggests that "the name Kufic was introduced to Western scholarship by Jacob George Christian Adler (1756-1834). Furthermore, the Kufic script plays an important role in the development of Islamic calligraphy. In fact, "it is the first style of Islamic period’ writings in which the manifestation of art, delicacy and beauty are explicitly evident" says Salwa Ibraheem Tawfeeq Al-Amin. The rule set for this writing was about the angular, linear shapes of the characters. In fact, "the rules that were defined at the outset of the Kufic tradition essentially remained the same throughout its lifespan" says Alain George.