This property defines the Unicodes which belongs to Meetei Mayek Extensions block
Characters like ꫠ,ꫡ,ꫢ, etc. are listed under Meetei Mayek Extensions Block.
24 Characters are present in Meetei Mayek Extensions Block starting with the Unicode point U+AAE0 that represents the character ꫠ.
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.