This property defines the Unicodes which belongs to Myanmar Extended B block
Characters like ꧠ,ꧡ,ꧢ, etc. are listed under Myanmar Extended B Block.
32 Characters are present in Myanmar Extended B Block starting with the Unicode point U+A9E0 that represents the character ꧠ.
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.