Extender - No
No is the designation for characters that do not function as extenders, meaning they are not used to lengthen or alter the sound of a preceding character in a writing system. This includes all letters, digits, punctuation, symbols, and even spaces, which maintain their standalone identity without extending or modifying adjacent glyphs. Essentially, any character that does not visually or phonetically continue a previous character’s form or value falls under this category, covering the vast majority of text in all scripts. No does not imply a negative quality but simply indicates the absence of extender behavior, such as elongation marks in Arabic or Japanese, which are instead assigned a positive value. In practical terms, characters marked No are processed as regular, independent units in text rendering and analysis.