This property defines the Unicodes which are Enclosing Marks
Characters like ҈,҉,᪾, etc. are listed under Enclosing Mark General Category.
13 Characters are present in Enclosing Mark General Category starting with the Unicode point U+0488 that represents the character ҈.
Currently, as per latest version 15.0.0, Unicode supports 30 number of General Category. Here are a few examples - Close Punctuation,Connector Punctuation,Control Character, etc.