This property defines the Unicodes which has Jamo Short Name as GG
Characters like ᄁ,ᆩ, etc. are listed under GG Jamo Short Name.
2 Characters are present in GG Jamo Short Name starting with the Unicode point U+1101 that represents the character ᄁ.
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.