This property defines the Unicodes which has Jamo Short Name as BB
Characters like ᄈ, etc. are listed under BB Jamo Short Name.
1 Characters are present in BB Jamo Short Name starting with the Unicode point U+1108 that represents the character ᄈ.
Currently, as per latest version 15.0.0, Unicode supports 53 number of Jamo Short Name. Here are a few examples - A,AE,B, etc.