This property defines the Unicodes which belongs to Vedic Extensions block
Characters like ᳐,᳑,᳒, etc. are listed under Vedic Extensions Block.
44 Characters are present in Vedic Extensions Block starting with the Unicode point U+1CD0 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.