This property defines the Unicodes which have Transformed Upright Vertical Orientation
Characters like 、,。,ぁ, etc. are listed under Transformed Upright Vertical Orientation.
148 Characters are present in Transformed Upright Vertical Orientation starting with the Unicode point U+3001 that represents the character 、.
Currently, as per latest version 15.0.0, Unicode supports 4 number of Vertical Orientation. Here are a few examples - Rotated,Transformed Rotated,Transformed Upright, etc.