High Taglian, also called the High Mode, was a variant of the written Taglian language. Like the alphabet of common Taglian, it originated in Taglios, a giant city on the great river of the southern continent. It was developed and used exclusively by the Gunni priestly caste, and had an additional 42 written characters. These characters duplicated meanings found among the 100+ characters of everyday Taglian, but served to distinguish the upper caste from the lower castes.

Sleepy the Annalist of the Black Company reported using both common written Taglian and High Taglian for her Annals in Water Sleeps. The old copyist Baladitya used this "ecclesiastical alphabet" to record the thoughts of Shivetya in Soldiers Live.

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