This property defines the Unicodes which belongs to Inscriptional Pahlavi block
Characters like 𐭠,𐭡,𐭢, etc. are listed under Inscriptional Pahlavi Block.
28 Characters are present in Inscriptional Pahlavi Block starting with the Unicode point U+10B60 that represents the character 𐭠.
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.