This property defines the Unicodes which have Runic script
Characters like ᚠ,ᚡ,ᚢ, etc. are listed under Runic Script.
86 Characters are present in Runic Script starting with the Unicode point U+16A0 that represents the character ᚠ.
Currently, as per latest version 15.0.0, Unicode supports 164 number of Script. Here are a few examples - Adlam,Ahom,Anatolian Hieroglyphs, etc.