This property defines the Unicodes which belongs to Malayalam block
Characters like ഀ,ഁ,ം, etc. are listed under Malayalam Block.
124 Characters are present in Malayalam Block starting with the Unicode point U+0D00 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.