The Marchen block contains characters used in the Marchen script, which is used for writing the Tibetan-based language Zhang-Zhung, spoken historically in western Tibet. The script is an abugida, with each consonant carrying an inherent vowel sound that can be modified with diacritics. The Marchen script was used primarily for religious texts associated with the Bon religion, which predates the introduction of Buddhism to Tibet. This block includes all the characters needed to write in Marchen, reflecting its historical and religious significance..