About IDEOGRAPHIC DESCRIPTION CHARACTER FULL SURROUND
Ideographic Description Character Full Surround (U+2FF4) is a Unicode other symbol from the Ideographic Description Characters block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class ON (other neutrals), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ⿴ or ⿴.