This property defines the Unicodes which has Jamo Short Name as U
Characters like ᅮ, etc. are listed under U Jamo Short Name.
1 Characters are present in U Jamo Short Name starting with the Unicode point U+116E that represents the character ᅮ.
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.