This property defines the Nonstarter Unicodes which should not be used as a line break opportunity
Characters like ៖,‼,‽, etc. are listed under Nonstarter Line Break.
33 Characters are present in Nonstarter Line Break starting with the Unicode point U+17D6 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.