This property defines the Unicodes which belongs to Hatran block
Characters like 𐣠,𐣡,𐣢, etc. are listed under Hatran Block.
28 Characters are present in Hatran Block starting with the Unicode point U+108E0 that represents the character 𐣠.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.