Undefined Character (U+2FFFD)

Plane:	Supplementary Ideographic Plane, U+20000 - U+2FFFF^[1]
HTML Entity:	`𯿽` `𯿽`
UTF-8 Encoding:	`0xF0 0xAF 0xBF 0xBD`
UTF-16 Encoding:	`0xD87F 0xDFFD`
UTF-32 Encoding:	`0x0002FFFD`

References