Manichaean is a Unicode block containing characters historically used for writing Sogdian, Parthian, and the dialects of Fars.
[3] The block has five variation sequences defined for standardized variants.
[4] They use U+FE00 VARIATION SELECTOR-1 (VS1) to denote alternate letter forms:[3] The following Unicode-related documents record the purpose and process of defining specific characters in the Manichaean block: