This property defines the Unicodes which belongs to Latin 1 Supplement block
Characters like ,,, etc. are listed under Latin 1 Supplement Block.
128 Characters are present in Latin 1 Supplement Block starting with the Unicode point U+0080 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.