This property defines the Unicodes whose line break behavior is unknown
Characters like ,,, etc. are listed under Unknown Line Break.
735 Characters are present in Unknown Line Break starting with the Unicode point U+E000 that represents the character .
Currently, as per latest version 15.0.0, Unicode supports 43 number of Line Break. Here are a few examples - Alphabetic,Alphabetic or Ideograph,Break After, etc.