This property defines the Unicodes which are Joiner
Characters like , etc. are listed under Joiner Indic Syllabic Category.
1 Characters are present in Joiner Indic Syllabic Category starting with the Unicode point U+200D that represents the character .
Currently, as per latest version 15.0.0, Unicode supports 36 number of Indic Syllabic Category. Here are a few examples - Avagraha,Bindu,Brahmi Joining Number, etc.