The source code is now specified in Unicode, and a large subset of Unicode characters may now appear in Scheme symbols and identifiers, and there are other minor changes to the lexical rules.

Although the term " Unicode " had previously been used for other purposes, such as the name of a programming language developed for the UNIVAC in the late 1950s, and most notably a universal telegraphic phrase-book that was first published in 1889, Becker may not have been aware of these earlier usages, and he explained that " he name ' Unicode ' is intended to suggest a unique, unified, universal encoding ".

Web pages authored using hypertext markup language ( HTML ) may contain multilingual text represented with the Unicode universal character set.

Key to the relationship between Unicode and HTML is the relationship between the " document character set " which defines the set of characters that may be present in a HTML document and assigns numbers to them and the " external character encoding " or " charset " used to encode a given document as a sequence of bytes.

This encoding may either be a Unicode Transformation Format, like UTF-8, that can directly encode any Unicode character, or a legacy encoding, like Windows-1252, that cannot.

However, even when using encodings that do not support all Unicode characters, the encoded document may make use of numeric character references.

As an HTML entity, it may be entered as < tt >& bull ;</ tt >, < tt >&# x2022 ;</ tt >, or < tt >&# 8226 ;</ tt > Unicode also defines a, a, a, as well as a for use in mathematical notation primarily as a dot product instead of interpunct.

In Unicode, these two uses are considered different characters, and have two different Unicode numerical identifiers (" code points "), though they may be rendered identically.

Beyond its specific use as a byte-order indicator, the BOM character may also indicate which of the several Unicode representations the text is encoded in.

Clause D98 of conformance ( section 3. 10 ) of the Unicode standard states, " The UTF-16 encoding scheme may or may not begin with a BOM.

One possible rationale is the desire to limit the size of the full Unicode character set, where CJK characters as represented by discrete ideograms may approach or exceed 100, 000 ( while those required for ordinary literacy in any language are probably under 3, 000 ).

( Proper names tend to be especially orthographically conservative — compare this to changing the spelling of one's name to suit a language reform in the U. S. or U. K .) While this may be considered primarily a graphical representation or rendering problem to be overcome by more artful fonts, the widespread use of Unicode would make it difficult to preserve such distinctions.

These characters, while archaic, are nonetheless part of Unicode and are mapped to U + 28DC8 and U + 221A5, respectively, and with the right fonts installed may actually display: < span lang =" vi-Hani "> </ span >.

The long s is represented in Unicode at the code point U + 017F in the Latin Extended-A range, and it may be represented in HTML as or.

Newer Windows text files may use a Unicode encoding such as UTF-16LE or UTF-8, with Byte Order Mark.

In ASCII and Unicode, the carriage return is defined as 13 ( or hexadecimal 0D ); it may also be seen as control + M or < tt >^ M </ tt >.

It may also be input by Unicode code-point on GTK-based applications by pressing Control + Shift + U, followed by the codepoint in hexadecimal (< tt > F7 </ tt >) and terminated by < tt > return </ tt >.

The local-part of the email address may use any of these ASCII characters RFC 5322 Section 3. 2. 3, RFC 6531 permits Unicode beyond the ASCII range:

As a result, such characters are written with similar or simpler characters in place, or the text may need to be written using a larger character set ( such as Unicode ) that supports the required character.

The use of Unicode in domain names makes it potentially easier to spoof web sites visited by World Wide Web users as the visual representation of an IDN string in a web browser may appear identical to another, depending on the font used.

A proposal was posted by Michael Everson for the Blissymbolics script to be included in the Universal Character Set ( UCS ) and encoded for use with the ISO / IEC 10646 and Unicode standards.

BCI would cooperate with the Unicode Technical Committee ( UTC ) and the ISO Working Group.

In particular, the Unicode standard provides foundations for complete BiDi support, with detailed rules as to how mixtures of left-to-right and right-to-left scripts are to be encoded and displayed.

* ICU International Components for Unicode contains an implementation of the bidirectional algorithm — along with other internationalization services

For example, use of ( which gives é, Latin lower-case E with acute accent, U + 00E9 in Unicode ) in an XML document will generate an error unless the entity has already been defined.

The simplest kind of automated collation is based on the numerical codes of the symbols in a character set, such as ASCII coding ( or any of its supersets such as Unicode ), with the symbols being ordered in increasing numerical order of their codes, and this ordering being extended to strings in accordance with the basic principles of alphabetical ordering ( mathematically speaking, lexicographical ordering ).

* ICU Locale Explorer: An online demonstration of sorting in different languages that uses the Unicode Collation Algorithm with International Components for Unicode

With Unicode, it is also possible to combine diacritical marks with most characters.

ISO-8859-1 ( with the control characters ) defines the first 256 code point assignments in Unicode.

Romanian did not initially get its and ( with comma ) letters, because these letters were initially unified with and ( with cedilla ) by the Unicode Consortium, considering the shapes with comma beneath to be glyph variants of the shapes with cedilla.

However, the letters with explicit comma below were later added to the Unicode standard and are also in ISO / IEC 8859-16.

Python 2. 0 was released on 16 October 2000, with many major new features including a full garbage collector and support for Unicode.

* 2D Key ( 2-Dimensional Key ) is a 2D matrix-like key input method having the key styles of multiline passphrase, crossword, ASCII / Unicode art, with optional textual semantic noises, to create big password / key beyond 128 bits to realize the MePKC ( Memorizable Public-Key Cryptography ) using fully memorizable private key upon the current private key management technologies like encrypted private key, split private key, and roaming private key.

* Scribe A Unicode text renderer with a public API for performing low-level text layout.

* Decode Unicode – A wiki with all 98, 884 Unicode characters, including full text search capability.

Developed in conjunction with the Universal Character Set standard and published in book form as The Unicode Standard, the latest version of Unicode consists of a repertoire of more than 110, 000 characters covering 100 scripts, a set of code charts for visual reference, an encoding methodology and set of standard character encodings, an enumeration of character properties such as upper and lower case, a set of reference data computer files, and a number of related items, such as character properties, rules for normalization, decomposition, collation, rendering, and bidirectional display order ( for the correct display of text containing both right-to-left scripts, such as Arabic and Hebrew, and left-to-right scripts ).

Unicode has the explicit aim of transcending the limitations of traditional character encodings, such as those defined by the ISO 8859 standard, which find wide usage in various countries of the world, but remain largely incompatible with each other.

Unicode solves this problem by assigning every known character its own code ; if this code is known, most modern computer systems provide a method to input it.

The Fahrenheit symbol has its own Unicode character: "℉"( U + 2109 ).

Its name is Latin for weighing scales, and its symbol is 20px ( Unicode ).

Today it has its own Unicode point, distinct from Greek lowercase mu, to acknowledge and encode its semantic power.

Its name is Latin for scorpion, and its symbol is 15px ( Unicode ).

Although any Unicode character can be referenced by its numeric code point, some HTML document authors prefer to use these named entities instead, where possible, as they are less cryptic and were better supported by early browsers.

A circle with a dot at its centre ( Unicode U + 2299 ⊙) indicates a vector pointing out of the front of the diagram, toward the viewer.

However, since the fairly recent addition of the Cherokee syllables to Unicode, the Cherokee language is experiencing a renaissance in its use on the Internet.

The Unicode Standard permits the BOM in UTF-8, but does not require or recommend for or against its use.

Each character is shown with the hex code of its Unicode equivalent and the decimal value of the ISO / IEC 646 code.

Its stated goal is to eventually replace existing character encoding schemes with Unicode and its standard Unicode Transformation Format ( UTF ) schemes, claiming that many of the existing schemes are limited in size and scope, and are incompatible with multilingual environments.

This is an ancient solar symbol featuring a circle with its center marked with a dot ( Unicode U + 2609 ☉ preferably or U + 2299 ⊙).

Due to its Unicode equivalence, GB18030 supports both simplified and traditional Chinese characters.

The SimSun 18030 font includes all the characters in Unicode 2. 1 plus new characters found in the Unicode CJK Unified Ideographs Extension A section, but despite its name, it does not contain glyphs for all GB 18030 characters.

Each character is shown with its Unicode equivalent and its decimal code.

The table below shows the Lao consonant, its name, its pronunciation according to the International Phonetic Alphabet ( IPA ), as well as various romanisation schemes, such as the French-based systems in use by both the US Board of Geographic Names and the British Permanent Committee on Geographical Names ( BGN / PCGN ), the English-based system in use by the US Library of Congress ( LC ), Royal Thai General System of Transcription ( RTSG ) used in Thailand, and finally its Unicode name.