This property defines the Unicodes which belongs to Mro block
Characters like 𖩀,𖩁,𖩂, etc. are listed under Mro Block.
45 Characters are present in Mro Block starting with the Unicode point U+16A40 that represents the character 𖩀.
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.