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1<?xml version='1.0' encoding="UTF-8"?> 1<?xml version='1.0' encoding="UTF-8"?>
2<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/utf-8.xml,v 1.8 2005/03/25 14:25:26 swift Exp $ --> 2<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/utf-8.xml,v 1.9 2005/04/05 08:59:28 neysx Exp $ -->
3<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 3<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
4 4
5<guide link="/doc/en/utf-8.xml"> 5<guide link="/doc/en/utf-8.xml">
6<title>Using UTF-8 with Gentoo</title> 6<title>Using UTF-8 with Gentoo</title>
7 7
18specifically UTF-8. 18specifically UTF-8.
19</abstract> 19</abstract>
20 20
21<license /> 21<license />
22 22
23<version>1.7</version> 23<version>1.8</version>
24<date>2005-03-25</date> 24<date>2005-04-05</date>
25 25
26<chapter> 26<chapter>
27<title>Character Encodings</title> 27<title>Character Encodings</title>
28<section> 28<section>
29<title>What is a Character Encoding?</title> 29<title>What is a Character Encoding?</title>
106<section> 106<section>
107<title>What is Unicode?</title> 107<title>What is Unicode?</title>
108<body> 108<body>
109 109
110<p> 110<p>
111Unicode throws away the traditional single-byte limit of character sets, and 111Unicode throws away the traditional single-byte limit of character sets. It
112even with two bytes per-character this allows a maximum 65,536 characters. 112uses 17 "planes" of 65,536 code points to describe a maximum of 1,114,112
113Although this number is extremely high when compared to seven-bit and eight-bit 113characters. As the first plane, aka. "Basic Multilingual Plane" or BMP,
114encodings, it is still not enough for a character set designed to be used for 114contains almost everything you will ever use, many have made the wrong
115symbols and scripts used only by scholars, and symbols that are only used in 115assumption that Unicode was a 16-bit character set.
116mathematics and other specialised fields.
117</p> 116</p>
118 117
119<p> 118<p>
120Unicode has been mapped in many different ways, but the two most common are 119Unicode has been mapped in many different ways, but the two most common are
121<b>UTF</b> (Unicode Transformation Format) and <b>UCS</b> (Universal Character 120<b>UTF</b> (Unicode Transformation Format) and <b>UCS</b> (Universal Character
148<title>What UTF-8 Can Do for You</title> 147<title>What UTF-8 Can Do for You</title>
149<body> 148<body>
150 149
151<p> 150<p>
152UTF-8 allows you to work in a standards-compliant and internationally accepted 151UTF-8 allows you to work in a standards-compliant and internationally accepted
153multilingual environment, with a comparitively low data redundancy. UTF-8 is 152multilingual environment, with a comparatively low data redundancy. UTF-8 is
154the preferred way for transmitting non-ASCII characters over the Internet, 153the preferred way for transmitting non-ASCII characters over the Internet,
155through Email, IRC or almost any other medium. Despite this, many people regard 154through Email, IRC or almost any other medium. Despite this, many people regard
156UTF-8 in online communication as abusive. It is always best to be aware of the 155UTF-8 in online communication as abusive. It is always best to be aware of the
157attitude towards UTF-8 in a specific channel, mailing list or Usenet group 156attitude towards UTF-8 in a specific channel, mailing list or Usenet group
158before using <e>non-ASCII</e> UTF-8. 157before using <e>non-ASCII</e> UTF-8.
692 </li> 691 </li>
693 <li><uri link="http://www.unicode.org">Unicode.org</uri></li> 692 <li><uri link="http://www.unicode.org">Unicode.org</uri></li>
694 <li><uri link="http://www.utf-8.com">UTF-8.com</uri></li> 693 <li><uri link="http://www.utf-8.com">UTF-8.com</uri></li>
695 <li><uri link="http://www.ietf.org/rfc/rfc3629.txt">RFC 3629</uri></li> 694 <li><uri link="http://www.ietf.org/rfc/rfc3629.txt">RFC 3629</uri></li>
696 <li><uri link="http://www.ietf.org/rfc/rfc2277.txt">RFC 2277</uri></li> 695 <li><uri link="http://www.ietf.org/rfc/rfc2277.txt">RFC 2277</uri></li>
696 <li>
697 <uri
698 link="http://www.tbray.org/ongoing/When/200x/2003/04/26/UTF">Characters vs.
699 Bytes</uri>
700 </li>
697</ul> 701</ul>
698 702
699</body> 703</body>
700</section> 704</section>
701</chapter> 705</chapter>

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