(click to copy)
Char 
Unicode name <control-0003>
Unicode group Basic Latin
Unicode Code Point U+3
HTML Entity (decimal) &#3;
HTML Entity (hex) &#x3;
How to type in Microsoft Windows Alt + 3
How to type in Microsoft Office write 3 then press Alt + X
How to type in Microsoft Office write U+3 then press Alt + X
How to type in Apple Mac Hold Alt, type 3 then release
How to type in Apple Mac Hold Option, type 3 then release
UTF-8 (hex) 0x03
UTF-8 (octal) 3
UTF-8 (binary) 00000011
UTF-16 (hex) 0x0003
UTF-16 (decimal) 3
UTF-32 (hex) 0x00000003
UTF-32 (decimal) 3
How to display in C/C++/Java "\u3"
How to type in Python u"\u3"