This property defines the Unicodes which are of Join Causing Type
Characters like ـ,ߺ,ࢃ, etc. are listed under Join Causing Joining Type.
7 Characters are present in Join Causing Joining Type starting with the Unicode point U+0640 that represents the character ـ.
Currently, as per latest version 15.0.0, Unicode supports 6 number of Joining Type. Here are a few examples - Dual Joining,Join Causing,Left Joining, etc.