Block: Ideographic Description Characters

Range U+2FF0 - U+2FFF
Official Chart http://www.unicode.org/charts/PDF/U2FF0.pdf
Wikipedia Ideographic Description Characters is a Unicode block containing graphic characters used for describing CJK ideographs. They are used in Ideographic Description Sequences (IDS) to provide a description of a ideograph, in terms of what other ideographs make it up and how they are laid out relative to one another. An IDS provides the reader with a description of an ideograph that cannot be represented properly, usually because it is not encoded in Unicode; rendering systems are not intended to automatically compose the pieces into a complete ideograph, and the descriptions are not standardized.
https://en.wikipedia.org/wiki/Ideographic_Description_Characters_(Unicode_block)
Characters
⿿