This property defines the Unicodes which have Bidirectional Class as Right to Left Letter
Characters like ־,׀,׃, etc. are listed under Right to Left Letter Bidi Class.
1559 Characters are present in Right to Left Letter Bidi Class starting with the Unicode point U+05BE that represents the character ־.
Currently, as per latest version 15.0.0, Unicode supports 23 number of Bidi Class. Here are a few examples - Arabic Letter,Arabic Number,Block Separator, etc.