This property defines the Unicodes which have Buhid script
Characters like ᝀ,ᝁ,ᝂ, etc. are listed under Buhid Script.
20 Characters are present in Buhid Script starting with the Unicode point U+1740 that represents the character ᝀ.
Currently, as per latest version 15.0.0, Unicode supports 164 number of Script. Here are a few examples - Adlam,Ahom,Anatolian Hieroglyphs, etc.