Rasm Uthmani is a style of calligraphy used to write the Quran, named after the renowned companion of the Prophet Muhammad, Uthman ibn Affan. This script style emerged during the early days of Islam and became widely used for copying the Quran. The Rasm Uthmani script is characterized by its distinct letterforms, ligatures, and diacritical marks, which facilitate the correct pronunciation and understanding of the Quranic text.