U+10EFA "𐻺" Arabic Double Vertical Bar Below Unicode Character

U+10EFA "𐻺" Arabic Double Vertical Bar Below is a specialized diacritical mark used in certain historical or modern orthographies for Arabic script, where it typically indicates a specific phonetic or grammatical modification, such as gemination or a subtle vowel quality. It appears as two short vertical lines placed beneath a base Arabic letter, distinguishing it from similar marks like the single vertical bar or the shadda. This character belongs to the Supplementary Multilingual Plane and is part of the Arabic Extended C block, designed to support scholarly and liturgical texts that require precise annotation of Quranic recitation or early Arabic manuscripts.