This property defines the Unicodes which have Syloti Nagri script
Characters like ꠀ,ꠁ,ꠂ, etc. are listed under Syloti Nagri Script.
45 Characters are present in Syloti Nagri Script starting with the Unicode point U+A800 that represents the character ꠀ.
Currently, as per latest version 15.0.0, Unicode supports 164 number of Script. Here are a few examples - Adlam,Ahom,Anatolian Hieroglyphs, etc.