This property defines the Unicodes which belongs to Combining Diacritical Marks block
Characters like ̀,́,̂, etc. are listed under Combining Diacritical Marks Block.
112 Characters are present in Combining Diacritical Marks Block starting with the Unicode point U+0300 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.