Character Encoding
UTF-8
0xF10x9F0xBF0xBF
UTF-16
0xD93F0xDFFF
UTF-32
0x0005FFFF
Copy & Paste Codes
Unicode Escape
\u{5FFFF}
HTML Entity (Decimal)

HTML Entity (Hex)

CSS Code
\5FFFF
JavaScript/JSON
String.fromCodePoint(0x5FFFF)
Python
chr(0x5FFFF)
Ruby/PHP
chr(0x5FFFF)
Unix, C, PHP, JAVA
0x5FFFF
Perl
chr(0x5FFFF)
URL Encoded
%5ffff