This property defines the Unicodes which belongs to New Tai Lue block
Characters like ᦀ,ᦁ,ᦂ, etc. are listed under New Tai Lue Block.
86 Characters are present in New Tai Lue Block starting with the Unicode point U+1980 that represents the character ᦀ.
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.