Undefined Character (U+16DFF)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𖷿` `𖷿`
UTF-8 Encoding:	`0xF0 0x96 0xB7 0xBF`
UTF-16 Encoding:	`0xD81B 0xDDFF`
UTF-32 Encoding:	`0x00016DFF`

References