This property defines the Unicodes which have Grantha script
Characters like 𑌀,𑌁,𑌂, etc. are listed under Grantha Script.
85 Characters are present in Grantha Script starting with the Unicode point U+11300 that represents the character 𑌀.
Currently, as per latest version 15.0.0, Unicode supports 164 number of Script. Here are a few examples - Adlam,Ahom,Anatolian Hieroglyphs, etc.