This property defines the Unicodes which have Kayah script
Characters like ꤀,꤁,꤂, etc. are listed under Kayah Script.
47 Characters are present in Kayah Script starting with the Unicode point U+A900 that represents the character ꤀.
Currently, as per latest version 15.0.0, Unicode supports 164 number of Script. Here are a few examples - Adlam,Ahom,Anatolian Hieroglyphs, etc.