U+FC78 "ﱸ" Arabic Ligature Theh with Meem Final Form Unicode Character

U+FC78 "ﱸ" Arabic Ligature Theh with Meem Final Form is a typographic ligature used in Arabic script to represent the joined combination of the letters Theh (ث) and Meem (م) when they appear in the final position of a word, typically for improved calligraphic aesthetics or to match historical typesetting conventions. This character belongs to the Arabic Presentation Forms-A block and is part of a collection of precomposed ligatures that were commonly used in older font standards to simplify complex letter combinations. It should be noted that modern Unicode usage generally separates the component letters, with U+FC78 existing primarily for compatibility with legacy texts.