This property defines the Unicodes which belongs to Kana Extended A block
Characters like 𛄀,𛄁,𛄂, etc. are listed under Kana Extended A Block.
36 Characters are present in Kana Extended A Block starting with the Unicode point U+1B100 that represents the character 𛄀.
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.