U+FC60 "ﱠ" Arabic Ligature Shadda with Fatha Isolated Form Unicode Character

U+FC60 "ﱠ" Arabic Ligature Shadda with Fatha Isolated Form is a typographic presentation form used in the Arabic script to represent the combination of the shadda diacritic, which indicates gemination or doubling of a consonant, and the fatha diacritic, which marks a short vowel sound like the English "a". This ligature is encoded as a single visual unit for compatibility with legacy text rendering systems and historical orthographic practices, where such combinations were stored as precomposed glyphs rather than as separate characters with combining marks. It appears in the Arabic Presentation Forms-A block and is intended primarily for roundtrip conversion with older standards, not for modern Arabic text, which typically encodes the shadda and fatha as separate combining characters U+0651 and U+064E respectively.