Join Control - No

No is the value assigned to characters that are not designated as join controls, meaning they have no explicit influence on cursive joining behavior in text rendering. These characters do not force a connection or break between adjacent letters in scripts like Arabic or Syriac, nor do they override the natural joining rules determined by the surrounding context. Instead, their presence is neutral, allowing default shaping algorithms to operate without any special directive from the character itself. This value applies to the vast majority of code points, including letters, digits, punctuation, and symbols, which simply pass through the joining process without altering it. As a result, No indicates that a character neither promotes nor prevents ligature formation, and it carries no hidden or implicit control over the visual connection of neighboring glyphs.