The following are ASCII representations of Unicode characters known to be used in
various contexts. In a few cases we also include unusual representations of integers
since integers are sometimes converted to characters.
| Description | Example | Usage |
|---|---|---|
| raw hex | 00E9 | Unicode Consortium file NamesList.txt |
| prefix 0x hex | 0x00E9 | Yudit keymap source files |
| prefix v decimal | v233 | Perl |
| prefix $ hex | $00E9 | Alex Eulenberg Mac OS X keyboard map source files |
| prefix # with suffix # hex | #00E9# | Mimer SQL |
| prefix #$ hex | #$00E9 | some Pascals including Delphi |
| prefix 16# hex | 16#00E9 | Postscript |
| prefix #x hex | #x00E9 | some Common Lisp implementations |
| prefix #16r hex | #16r00E9 | Common Lisp integer |
| prefix backslash hex [4] | \00E9 | Oracle in unistr function |
| prefix backslash-u decimal | \u0233 | Rich Text Format |
| prefix backslash-u hex [4] | \u00E9 | Java, Ruby |
| prefix backslash-u left brace hex [variable] right brace | \u{E9}, \u{000E9}, multiple codepoints: \u{E9 74 E9} | Ruby |
| prefix backslash-U hex [8] outside BMP, prefix backslash-u hex [4] within BMP | \u00E9 | C#, D, Python, Scheme, Tcl |
| prefix U hex | U00E9 | |
| prefix u hex | u00E9 | |
| prefix u HEX [5-6] | u100E9 | Fontlab Studio outside BMP |
| prefix %u hex | %u00E9 | |
| prefix U+ hex | U+00E9 | Unicode Consortium documents |
| prefix uni HEX [4] | uni00E9 | Fontlab Studio within BMP |
| prefix X with hex in single quotes | X'00E9' | some IBM documentation |
| prefix X with hex in double quotes with optional type postfix character c[har], d[char], w[char] | X"00E9"d | D |
| prefix 16# and suffix # hex | 16#00E9# | Ada |
| prefix U in angle brackets hex | <U00E9> | POSIX locale specifications |
| prefix backslash-x hex | \x00E9 | C wide string, Tcl integer |
| prefix backslash-x hex in braces | \x{00E9} | Perl |
| prefix backslash {U+ hex with suffix } | \{U+E9} | BitC |
| prefix &# with suffix ; decimal | é | HTML, XML, XHTML |
| prefix &#x hex with suffix ; | é | HTML, XML, XHTML |
| prefix &# decimal | é | SGML, HTML (deprecated) |
| prefix &#x hex | é | SGML, HTML (deprecated) |
| prefix backslash-# decimal | \#0233; | SGML |
| prefix backslash-#x hex | \#x00E9; | SGML |
| prefix _x and suffix _ hex | _x00E9_ | OOXML, SQL/XML |
| 3 low bytes each with backslash prefix in big-endian order octal | \000\000\351 | |
| 3 low bytes each with backslash-x prefix in big-endian order hex | \x00\x00\xE9 | |
| 3 low bytes each with backslash-d prefix in big-endian order decimal | \d000\d000\d233 | POSIX locale specifications |
| prefix " hex[4] (UTF16 - use surrogate pairs beyond BMP) | "00E9 | XeTeX |
| hex UTF-8 with each byte's hex preceded by an =-sign | =C3=A9 | RFC 2045 Quoted Printable |
| hex UTF-8 with each byte's hex preceded by a %-sign | %C3%A9 | RFC 2396 URI escape format |
| hex UTF-8 with each byte's hex preceded by a backslash-x | \xC3\xA9 | Apache log format |
| hex UTF-8 with each byte's hex surrounded by angle brackets | <C3><A9> | print format for uninterpreted bytes used by various programs |
| octal UTF-8 with backslash prefixes | \303\251 | print format for uninterpreted bytes used by various programs |
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