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From Pathfinder Advanced Player's Guide, which isn't enabled.

Orthographic Mastery

FEAT 4
Archetype Loremaster
Prerequisites Loremaster Dedication

You understand the principles that underlie all written words, allowing you to read nearly any text. You can attempt to Decipher Writing using Loremaster Lore in place of the required skill.

Pathfinder Advanced Player's GuideOGL