This property defines the Unicodes which are Virama
Characters like ्,্,੍, etc. are listed under Virama Indic Syllabic Category.
27 Characters are present in Virama Indic Syllabic Category starting with the Unicode point U+094D 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.