U+FBBC "﮼" Arabic Symbol Double Vertical Bar Below Unicode Character

U+FBBC "﮼" Arabic Symbol Double Vertical Bar Below is a specialized diacritical mark used in the Arabic script, primarily within the context of Quranic recitation and advanced orthography, to indicate a specific phonetic or grammatical feature that requires a sustained pause or a particular prolongation, often appearing beneath certain letters to modify their pronunciation. It is part of the Arabic Presentation Forms-A block, which contains a range of such variant characters designed for compatibility with legacy text encoding systems. This glyph is not commonly used in standard modern Arabic writing but serves a precise role in ensuring accurate textual representation in religious and scholarly manuscripts.