This property defines the Unicodes which belongs to Egyptian Hieroglyph Format Controls block
Characters like ,,, etc. are listed under Egyptian Hieroglyph Format Controls Block.
39 Characters are present in Egyptian Hieroglyph Format Controls Block starting with the Unicode point U+13430 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.