This property defines the Unicodes which belongs to Tibetan block
Characters like ༀ,༁,༂, etc. are listed under Tibetan Block.
217 Characters are present in Tibetan Block starting with the Unicode point U+0F00 that represents the character ༀ.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.