This property defines the Unicodes which belongs to Psalter Pahlavi block
Characters like 𐮀,𐮁,𐮂, etc. are listed under Psalter Pahlavi Block.
31 Characters are present in Psalter Pahlavi Block starting with the Unicode point U+10B80 that represents the character 𐮀.
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.