This property defines the Unicodes which belongs to Gurmukhi block
Characters like ਁ,ਂ,ਃ, etc. are listed under Gurmukhi Block.
97 Characters are present in Gurmukhi Block starting with the Unicode point U+0A01 that represents the character ਁ.
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.