This property defines the Unicodes which belongs to Symbols For Legacy Computing block
Characters like 🬀,🬁,🬂, etc. are listed under Symbols For Legacy Computing Block.
215 Characters are present in Symbols For Legacy Computing Block starting with the Unicode point U+1FB00 that represents the character 🬀.
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.