Joining Group - Zain

Zain is a joining group value that defines how the Arabic letter zain, shaped like a zigzag with a dot above, connects to adjacent characters in cursive scripts. It belongs to the category of letters that join on both sides, meaning it can link to a preceding and following character within a word, but only in certain script contexts. Specifically, Zain represents a right-joining behavior in most traditional Arabic writing, where it connects primarily to the left side (the previous character) while leaving a gap on the right, depending on the script style. This affects the visual shaping of words and is crucial for rendering text correctly in languages like Arabic, Persian, and Urdu. The value ensures that letters like zain are displayed with the proper initial, medial, or isolated forms based on their position in a word.