The Ol Chiki block contains characters used in the Ol Chiki script, also known as the Santali alphabet, which was created in the 20th century by Pandit Raghunath Murmu to write the Santali language spoken by the Santal people in India, Bangladesh, and Nepal. The script is alphabetic, with distinct characters representing individual sounds in the Santali language. The Ol Chiki script has been instrumental in preserving and promoting the Santali language, particularly in literature, education, and cultural activities. This block includes all the characters needed to write in Ol Chiki, reflecting its importance in the cultural identity of the Santal people..