Yes Value in Prepended Concatenation Mark Unicode Property

Yes is the designation for characters that act as special connectors within a word or phrase, attaching to adjacent letters without breaking the flow of text. These marks, such as the Arabic sign Sindhi ampersand or certain combining punctuation, are not themselves rendered as separate spaces but instead bind tightly to the following or preceding character, often to create a single orthographic unit. This behavior ensures that the mark and its host are treated as one cohesive token for line breaking, cursor movement, or text selection, preventing unwanted splits or reordering. The value exists to support scripts where such ligature-like punctuation is intrinsic to correct reading, especially in complex writing systems where visual attachment alters meaning or pronunciation.