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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>CSS Print Profile</title>
<style type="text/css">
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em em.RFC2119 { text-transform: lowercase; font-style: normal }
</style>
<link rel="stylesheet" type="text/css" href="http://www.w3.org/StyleSheets/TR/W3C-WD.css" />
</head>
<body>
<div class="head" >
<p><a href="http://www.w3.org/"><img height="48" width="72" alt="W3C" src="http://www.w3.org/Icons/w3c_home"/></a>
</p>
<h1 id="cssprintprofile">CSS Print Profile</h1>
<h2 id="workingdraft">W3C Working Draft 13 October 2006</h2>
<dl>
<dt>This version: </dt>
<dd><a href="http://www.w3.org/TR/2006/WD-css-print-20061013">
http://www.w3.org/TR/2006/WD-css-print-20061013</a></dd>
<dt>Latest version: </dt>
<dd><a
href="http://www.w3.org/TR/css-print/">
http://www.w3.org/TR/css-print/</a></dd>
<dt>Previous Version:</dt>
<dd><a href="http://www.w3.org/TR/2004/CR-css-print-20040225/">
http://www.w3.org/TR/2004/CR-css-print-20040225/</a></dd>
<dt>Editor: </dt>
<dd>Melinda Grant, Hewlett-Packard Company </dd>
</dl>
<p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> &copy; 2006 <a href="http://www.w3.org/"><acronym title="World Wide Web Consortium">W3C</acronym></a><sup>&reg;</sup> (<a href="http://www.csail.mit.edu/"><acronym title="Massachusetts Institute of Technology">MIT</acronym></a>, <a href="http://www.ercim.org/"><acronym title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>, <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a> and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document use</a> rules apply.</p></div>
<hr title="Separator for header" />
<h2 class="no-num no-toc" id="abstract">Abstract</h2>
<p>This specification defines a subset of <cite>Cascading Style Sheets Level 2, revision 1</cite>
[<a href="#ref-css21">CSS21</a>] and <cite>CSS3
Module: Paged Media</cite> [<a
href="#ref-pgmedia">PAGEMEDIA</a>]
for printing to low-cost devices. It
is designed for printing in situations where it is not feasible
or desirable to install a printer-specific driver, and for situations
were some variability in the output is acceptable.</p>
<p>This profile is designed to work in conjunction with <cite>XHTML-Print</cite> [<a href="#ref-XHTMLPrint">XHTMLPRINT</a>] and
defines a minimum level of conformance as well as
an extension set that provides stronger layout control for the printing of
mixed text and images, tables and image collections.</p>
<!-- **************************** -->
<!-- STATUS of DOCUMENT -->
<!-- **************************** -->
<h2 class="no-num no-toc" id="status">Status of this Document</h2>
<!--begin-status-->
<p><em>This section describes the status of this document at the time of
its publication. Other documents may supersede this document. A list of
current W3C publications and the latest revision of this technical report
can be found in the <a href="http://www.w3.org/TR/">W3C technical reports
index at http://www.w3.org/TR/.</a></em></p>
<p>Publication as a Working Draft does not imply endorsement by the W3C
Membership. This is a draft document and may be updated, replaced or
obsoleted by other documents at any time. It is inappropriate to cite
this document as other than work in progress.</p>
<p>The (<a
href="http://lists.w3.org/Archives/Public/www-style/">archived</a>)
public mailing list <a
href="mailto:www-style@w3.org">www-style@w3.org</a> (see <a
href="http://www.w3.org/Mail/Request">instructions</a>) is preferred for
discussion of this specification. When sending e-mail, please put the
text &#8220;css-print&#8221; in the subject, preferably like this:
&#8220;[<!---->css-print] <em>&hellip;summary of
comment&hellip;</em>&#8221;</p>
<p>This document was produced by the <a href="/Style/CSS/members">CSS
Working Group</a> (part of the <a href="/Style/">Style Activity</a>).</p>
<p>This document was produced by a group operating under the <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February
2004 W3C Patent Policy</a>. W3C maintains a <a
href="/Style/CSS/Disclosures" rel="disclosure">public list of any patent
disclosures</a> made in connection with the deliverables of the group;
that page also includes instructions for disclosing a patent. An
individual who has actual knowledge of a patent which the individual
believes contains <a
href="/Consortium/Patent-Policy-20040205/#def-essential">Essential
Claim(s)</a> must disclose the information in accordance with <a
href="/Consortium/Patent-Policy-20040205/#sec-Disclosure">section 6 of
the W3C Patent Policy</a>.</p>
<!--end-status-->
<p>This document contains the <abbr title="Cascading Style
Sheets">CSS</abbr> Print Profile W3C Last Call <a
href="http://www.w3.org/2005/10/Process-20051014/tr.html#RecsWD"> Working
Draft</a> of 16 October 2006.&nbsp; The Last Call period ends on 20
November 2006.</p>
<p>Relative to the previous Candidate Recommendation, this version adds two new features (<a
class="property" href="http://www.w3.org/TR/css3-page/Overview.html#fit">'fit'</a> and <a class="property"
href="http://www.w3.org/TR/css3-page/Overview.html#fit-position">'fit-position'</a>), synchronizes this profile with
changes to <a href="http://www.w3.org/TR/xhtml-print/">XHTML-Print</a>, removes redundancies with <a href="http://www.w3.org/TR/css3-page/">CSS3 Module: Paged Media</a>
and makes miscellaneous
clarifications and editorial improvements.</p>
<!-- end of status -->
<!-- *************************** -->
<!-- TABLE OF CONTENTS -->
<!-- *************************** -->
<h2 class="no-toc" id="toc">Table of Contents</h2>
<div class="contents">
<ul class="toc">
<li class="tocline">1. <a href="#section-overview">Overview</a>
</li>
<li class="tocline">2. <a href="#section-conformance">Conformance</a>
<ul class="toc">
<li class="tocline">2.1. <a href="#s2.1">Enhanced Layout Extension Conformance</a></li>
</ul>
</li>
<li class="tocline">3. <a href="#section-selectors">Selectors</a>
<ul class="toc">
<li class="tocline">3.1. <a href="#at-rules">at-rules</a></li>
</ul>
</li>
<li class="tocline">4. <a href="#section-properties">Properties</a>
</li>
<li class="tocline">5. <a href="#section-syntax">CSS Syntax</a>
</li>
<li class="tocline">6. <a href="#section-assigning">Assigning Property Values, Cascading, and Inheritance</a>
</li>
<li class="tocline">7. <a href="#section-mediatypes">Media Types</a>
</li>
<li class="tocline">8. <a href="#section-interactions">CSS Print Profile Properties and User Agent interactions</a>
<ul class="toc">
<li class="tocline">8.1. <a href="#s.8.1">Nested Floats, Divs, and Absolutely Positioned Boxes </a></li>
<li class="tocline">8.2. <a href="#s.8.2">Page Breaks</a></li>
<li class="tocline">8.3. <a href="#s.8.3">Page Size</a></li>
<li class="tocline">8.4. <a href="#s.8.4">Default Style Sheets</a></li>
</ul>
</li>
<li class="tocline">9. <a href="#section-ack">Acknowledgements</a>
</li>
<li class="tocline">A. <a href="#section-references"> References</a>
<ul class="toc">
<li class="tocline">A.1 <a href="#section-normref"> Normative References</a></li>
<li class="tocline">A.2 <a href="#section-informref"> Informative References</a> </li>
</ul>
</li>
</ul>
</div>
<!-- ****************** -->
<!-- OVERVIEW -->
<!-- ****************** -->
<h2 id="section-overview">1. Overview</h2>
<p> All sections of this document are normative unless noted as informative.
</p>
<p>This document specifies a profile of the <cite>Cascading Style Sheets,
level 2, revision 1</cite> (CSS 2.1) specification [<a href="#ref-css21">CSS21</a>] along with
the <cite>CSS3 Module: Paged Media</cite> [<a
href="#ref-pgmedia">PAGEMEDIA</a>].
</p>
<p>CSS 2.1 specifies how developers can author style sheets for
presenting documents across multiple devices and media types. While this is very
important, it is also important that authors have an understanding of what
features are supported on these different devices. Likewise, it is important
that similar devices operate in a similar manner. Otherwise, authors could need
to develop style sheets for each version of each device -- raising the cost of
content development and decreasing interoperability.</p>
<p>
The CSS Print Profile specifies a conformance profile for
printing in environments where it is not feasible or desirable to use a
printer-specific driver. An example of such an environment is printing to
low-cost printers from mobile phones.&nbsp; The profile identifies a minimum set of properties, values, selectors,
and cascading rules to support these use scenarios. This profile was designed in
conjunction with <cite>XHTML-Print</cite> (<a href="#ref-XHTMLPrint">[XHTMLPRINT]</a>)
for low cost printers that may not have a full-page buffer and that
generally print from top-to-bottom.</p>
<p> This profile also contains an enhanced layout
extension set which supports more exacting page layouts and orientations. These
features provide sufficient richness to print, for example, photo album pages
from a digital still camera or print-targeted television content.</p>
<p>Conformance to this profile means that a user agent
supports, at a minimum, the features defined in this specification.
This subject is addressed in <a href="#section-conformance">Section 2,
Conformance</a> below.</p>
<!-- ******************** -->
<!-- CONFORMANCE -->
<!-- ******************** -->
<h2 id="section-conformance">2. Conformance</h2>
<p>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY" and "OPTIONAL" in this
document are to be interpreted as described in RFC&nbsp;2119 (see <a
class="noxref" href="#ref-RFC2119" rel="biblioentry"><span
class="normref">[RFC2119]</span></a>). However, for readability, these
words do not appear in all uppercase letters in this
specification.</p>
<p>The primary role of a profile is to define a subset of features that provides
a minimal guarantee of interoperability. In the case of the CSS Print Profile,
this guarantee is that a conforming user agent will support the features defined
in this specification following the CSS 2.1 conformance clause ([<a
href="#ref-css21">CSS21</a>] Section 3.2), recast
and summarized below:</p>
<ol>
<li>A CSS Print Profile conforming user agent (PP-UA or more simply "printer") <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support the
<em>all</em> and <em>print</em> CSS 2.1 media types. A printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> support other
CSS 2.1 media types, as well. </li>
<li>For each source document, a printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> attempt to retrieve all associated
style sheets that are appropriate for the supported media types.
A failure to retrieve a style sheet due to problems such as
a loss of network connection <em title="SHOULD NOT in the RFC 2119 context" class="RFC2119">SHOULD NOT</em> stop the printer from processing the document.
</li>
<li>A printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> parse the style sheets according to this specification. In
particular,
the printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> recognize all CSS Print Profile at-rules, blocks,
declarations, and selectors. If a printer encounters a property that applies for
a supported media type, the printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> parse the value according to the
property definition. This means that the printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> accept all valid values
and <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> ignore declarations with invalid values. A printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> ignore rules that
apply to unsupported media types. </li>
<li>For each element in a document tree, the printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> assign a value for
every applicable property according to the property's definition and the rules
of cascading and inheritance. </li>
<li>If the source document comes with alternate style sheets (such as with the
"alternate" keyword in HTML 4.01 [<a href="#ref-html4">HTML4</a>]), the printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em>
ignore the style sheet or treat it in some implementation dependent manner. </li></ol>
<p>As with CSS 2.1, there are qualifications to this conformance clause:</p>
<ol>
<li>Values <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> be approximated when <em title="REQUIRED in the RFC 2119 context" class="RFC2119">REQUIRED</em> by the printer.</li>
<li>The inability of a printer to implement part of this specification due to
the limitations of a particular device (e.g., a printer cannot render colors on
a monochrome page) <em title="SHALL NOT in the RFC 2119 context" class="RFC2119">SHALL NOT</em> imply non-conformance. </li>
</ol>
<p>It is <em title="RECOMMENDED in the RFC 2119 context" class="RFC2119">RECOMMENDED</em>
that authors use this conformance profile to take advantage
of forward compatibility. Authors <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> use style properties with
an understanding that the cascading rules are processed correctly and that
unknown properties and values are ignored. For example:</p>
<div class="code-example"><pre> body {
&nbsp;&nbsp;&nbsp;&nbsp;background-position: center center;
&nbsp;&nbsp;&nbsp;&nbsp;background-position: 45% 55%;
}
</pre></div>
<p>A printer that can accept percentage values for the
background-position property will process the first background-position
declaration and then replace that value with the second
background-position declaration. A printer that cannot accept percentage values will process the first
background-position declaration and ignore the second background-position
declaration.</p>
<h3 id="s2.1">2.1. Enhanced Layout Extension Conformance</h3>
<p>Some print applications require a
more exacting page layout than is available from a
minimally conforming printer (<i>e.g.,</i> photo album pages or pages from
a digital TV).
The Enhanced Layout Extension increases the number
of properties that a conforming printer <em title="MUST in the RFC 2119 context" class="RFC2119">MUST</em> support and thereby the
requirements of its memory and performance capabilities. These
added CSS constructs
are indicated with a "<em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em>" or
an increased range of values, in the CSS
Print-Enhanced columns below.</p>
<p> Printers supporting the Enhanced Layout
Extension <em
title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> also
support an <em title="OPTIONAL in the RFC 2119 context"
class="RFC2119">OPTIONAL</em>, discoverable (via some means outside the scope of
this document) Enhanced Layout Extension indicator.</p>
<!-- ******************* -->
<!-- SELECTORS -->
<!-- ******************* -->
<h2 id="section-selectors">3. Selectors</h2>
<p>In CSS 2.1, pattern matching rules determine which style rules apply to elements
in the document tree [<a
href="#ref-css21">CSS21</a>].</p>
<p>
Consideration is given to low-cost printers that might not be able
to store all the attributes of each element, but only keep the few that are necessary.
Therefore, only Enhanced Layout Extension conforming
printers <em title="MUST in the RFC 2119 context" class="RFC2119">MUST</em> support attribute selectors.
</p>
<p>
The following table summarizes CSS Print Profile selector syntax. In
addition to the selectors marked "<em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em>"
in the CSS Print or CSS Print-Enhanced columns, the CSS Print
Profile includes the CSS 2.1 grouping mechanism (See [<a href="#ref-css21">CSS21</a>] Section 5.2.1).
</p>
<table border="1" width="80%"
summary="List of all selectors indicating which ones are supported">
<tbody>
<tr>
<th>Pattern</th>
<th>Meaning</th>
<th>Selector type</th>
<th>CSS Print</th>
<th>CSS Print-Enhanced</th>
</tr>
<tr class="yes">
<td>*</td>
<td>Matches any element</td>
<td>Universal selector</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>E</td>
<td>Matches any E element (i.e., any element of type E)</td>
<td>Type selectors</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>E F</td>
<td>Matches any F element that is a descendant of an E element</td>
<td>Descendant selectors</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>E &gt; F</td>
<td>Matches any F element that is a child of an element E</td>
<td>Child selectors</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="enh">
<td>E[foo]</td>
<td>Matches any E element with the "foo" attribute set (whatever the
value).</td>
<td>Attribute selectors</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="enh">
<td>E[foo="warning"]</td>
<td>Matches any E element whose "foo" attribute value is exactly equal to
"warning".</td>
<td>Attribute selectors</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="enh">
<td>E[foo~="warning"]</td>
<td>Matches any E element whose "foo" attribute value is a list of
space-separated values, one of which is exactly equal to "warning".</td>
<td>Attribute selectors</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>E.classid</td>
<td>The same as E[class~=classid]</td>
<td>Class selectors</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>E#myid</td>
<td>Matches any E element id equal to "myid".</td>
<td>ID selectors</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>@page :first</td>
<td>Specifies style for the first page of a document</td>
<td>Page pseudo-classes</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
</tbody>
</table>
<h3 id="at-rules">3.1 At-rules</h3>
<p>The following table summarizes CSS Print Profile at-rule syntax.</p>
<table border="1" width="80%">
<tbody>
<tr>
<th>at-rule</th>
<th>Function</th>
<th>CSS Print</th>
<th>CSS Print-Enhanced</th></tr>
<tr class="enh">
<td>@import</td>
<td>Imports an external style sheet.</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td></tr>
<tr class="yes">
<td>@charset</td>
<td>Defines character set for the style sheet.</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td></tr>
<tr class="yes">
<td>@media</td>
<td>Groups a set of style rules to apply only to one or more particular
media.</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td></tr>
<tr class="yes">
<td>@page</td>
<td>Defines a (optionally named) page formatting context.</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td></tr>
<tr class="yes">
<td>@bottom-left-corner, @bottom-left, <br />@bottom-center, @bottom-right, @bottom-right-corner</td>
<td>Defines areas on the page within the running footer in the page's bottom margin [<a
href="#ref-pgmedia">PAGEMEDIA</a>]</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
<tr class="yes">
<td>@top-left-corner, @top-left, <br />@top-center, <br /> @top-right, <br />@top-right-corner</td>
<td>Defines areas on the page within the running header in the page's top margin [<a
href="#ref-pgmedia">PAGEMEDIA</a>]</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
</tr>
</tbody>
</table>
<!-- ******************************* -->
<!-- PROPERTIES AND VALUES -->
<!-- ******************************* -->
<h2 id="section-properties">4. Properties</h2>
<p> As with selectors, the properties a printer <em title="MUST in the RFC 2119 context" class="RFC2119">MUST</em>
support are similar to those that a mobile device <em title="MUST in the RFC 2119 context" class="RFC2119">MUST</em> support ([<a
href="#ref-cssmobile">CSSMOBILE</a>], <a
href="http://www.w3.org/TR/css-mobile#section-properties">
Properties</a>) with the exception of those that don't apply to the
page or are specifically targeted at media other than the page. </p>
<p>
In some cases the allowable values for a printer are a subset of the full range of
values to match the reduced memory and performance capabilities of a low-cost printer.
</p>
<p>The following table summarizes CSS Print Profile properties and property
values. Refer to <cite>CSS3 Module: Paged Media</cite> [<a
href="#ref-pgmedia">PAGEMEDIA</a>]&nbsp; for the definition of the
image-orientation, fit, fit-position, and size properties and CSS 2.1 [<a href="#ref-css21">CSS21</a>]
for the definition of all other properties and values.</p>
<table border="1" width="80%">
<thead>
<tr align="center">
<th>Name</th>
<th>CSS Print</th>
<th>CSS Print-Enhanced</th>
<th>CSS Values</th>
<th>Initial value</th></tr></thead>
<tbody>
<tr class="yes">
<td>'background'</td>
<td>background-color | inherit</td>
<td>
['background-color' || 'background-image' || 'background-repeat' || 'background-position']
| inherit</td>
<td>['background-color' || 'background-image' || 'background-repeat' || 'background-attachment' || 'background-position'] | inherit</td>
<td>see individual properties</td></tr>
<tr class="yes">
<td>'background-color'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;color&gt; | transparent | inherit</td>
<td>transparent</td></tr>
<tr class="enh">
<td>'background-image'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;uri&gt; | none | inherit</td>
<td>none</td></tr>
<tr class="enh">
<td>'background-position'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[ [ &lt;percentage&gt; | &lt;length&gt; ]{1,2} | [ [top | center |
bottom] || [left | center | right] ] ] | inherit</td>
<td>0% 0%</td></tr>
<tr class="enh">
<td>'background-repeat'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>repeat | repeat-x | repeat-y | no-repeat | inherit</td>
<td>repeat</td></tr>
<tr class="enh">
<td>'border'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[ &lt;border-width&gt; || &lt;border-style&gt; || [&lt;color&gt; |
transparent] ] | inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'border-collapse'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>collapse | separate | inherit</td>
<td>collapse</td></tr>
<tr class="enh">
<td>'border-color'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[&lt;color&gt; | transparent]{1,4} | inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'border-spacing'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;length&gt; &lt;length&gt;? | inherit</td>
<td>0</td></tr>
<tr class="enh">
<td>'border-style'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td> none, solid </td>
<td>&lt;border-style&gt;{1,4} | inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'border-top' 'border-right' 'border-bottom' 'border-left'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[ &lt;border-width&gt; || &lt;border-style&gt; || [&lt;color&gt; |
transparent] ] | inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'border-top-color' 'border-right-color' 'border-bottom-color'
'border-left-color'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;border-color&gt; | transparent | inherit</td>
<td>the value of the 'color' property</td></tr>
<tr class="enh">
<td>'border-top-style' 'border-right-style' 'border-bottom-style'
'border-left-style'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td>none, solid</td>
<td>&lt;border-style&gt; | inherit</td>
<td>none</td></tr>
<tr class="enh">
<td>'border-top-width' 'border-right-width' 'border-bottom-width'
'border-left-width'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;border-width&gt; | inherit</td>
<td>medium</td></tr>
<tr class="enh">
<td>'border-width'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;border-width&gt;{1,4} | inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'bottom'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;length&gt; | &lt;percentage&gt; | auto | inherit</td>
<td>auto</td></tr>
<tr class="enh">
<td>'caption-side'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>top | bottom | left | right | inherit</td>
<td>top</td></tr>
<tr class="enh">
<td>'clear'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>none | left | right | both | inherit</td>
<td>none</td></tr>
<tr class="enh">
<td>'clip'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;shape&gt; | auto | inherit</td>
<td>auto</td></tr>
<tr class="yes">
<td>'color'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;color&gt; | inherit</td>
<td>depends on user agent</td></tr>
<tr class="yes">
<td>'content'</td>
<td>inherit | [&lt;string&gt; | counter(pages<a href="#table_note_0">&dagger;</a>)]+</td>
<td>inherit | [&lt;string&gt; | counter(pages<a href="#table_note_0">&dagger;</a>)]+</td>
<td>[ &lt;string&gt; | &lt;uri&gt; | &lt;counter&gt; | attr(X) |
open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit</td>
<td>empty string</td></tr>
<tr class="yes">
<td>'counter-increment'</td>
<td>"pages"<a href="#table_note_0">&dagger;</a></td>
<td>"pages"<a href="#table_note_0">&dagger;</a></td>
<td>[ &lt;identifier&gt; &lt;integer&gt; ]+ | none |
inherit</td>
<td>none</td></tr>
<tr class="yes">
<td>'counter-reset'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[ &lt;identifier&gt; &lt;integer&gt;? ]+ | none | inherit</td>
<td>none</td></tr>
<tr class="enh">
<td>'display'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td>inline | block | list-item | none |inherit</td>
<td>inline | block | list-item | run-in | compact | marker | table |
inline-table | table-row-group | table-header-group | table-footer-group |
table-row | table-column-group | table-column | table-cell | table-caption
| none | inherit</td>
<td>inline</td></tr>
<tr class="enh"><td>'fit'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em> </td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>fill | hidden | meet | slice</td>
<td>fill</td>
</tr>
<tr class="enh"><td>'fit-position'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em> </td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[ [&lt;percentage&gt; | &lt;length&gt; ]{1,2} | [ [top | center |
bottom] || [left | center | right] ] ] | auto</td>
<td>0% 0%</td>
</tr>
<tr class="enh">
<td>'float'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em> </td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>left | right | none | inherit</td>
<td>none</td></tr>
<tr class="yes">
<td>'font'</td>
<td> [ [ 'font-style' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family' ] | inherit</td>
<td> [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family' ] | inherit</td>
<td> [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family' ] | caption | icon | menu | message-box |
small-caption | status-bar | inherit</td>
<td>see individual properties</td></tr>
<tr class="yes">
<td>'font-family'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em><a href="#table_note_1">*</a></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em><a href="#table_note_1">*</a></td>
<td>[[ &lt;family-name&gt; | &lt;generic-family&gt; ],]* [
&lt;family-name&gt; | &lt;generic-family&gt; ] | inherit</td>
<td>depends on user agent</td></tr>
<tr class="yes">
<td>'font-size'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> <a
href="#table_note_2">**</a></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> <a
href="#table_note_2">**</a></td>
<td>&lt;absolute-size&gt; | &lt;relative-size&gt; | &lt;length&gt; |
&lt;percentage&gt; | inherit</td>
<td>medium</td></tr>
<tr class="yes">
<td>'font-style'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em><a
href="#table_note_2">**</a></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> <a
href="#table_note_2">**</a></td>
<td>normal | italic | oblique | inherit</td>
<td>normal</td></tr>
<tr class="enh">
<td>'font-variant'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>normal | small-caps | inherit</td>
<td>normal</td></tr>
<tr class="yes">
<td>'font-weight'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> <a
href="#table_note_2">**</a></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> <a
href="#table_note_2">**</a></td>
<td>normal | bold | bolder | lighter | 100 | 200 | 300 | 400 | 500 | 600 |
700 | 800 | 900 | inherit</td>
<td>normal</td></tr>
<tr class="yes">
<td>'height'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> </td>
<td>&lt;length&gt; | &lt;percentage&gt; | auto | inherit</td>
<td>auto</td></tr>
<tr class="enh">
<td>'image-orientation'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;angle&gt; | auto</td>
<td>auto</td></tr>
<tr class="enh">
<td>'left'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> </td>
<td>&lt;length&gt; | &lt;percentage&gt; | auto | inherit</td>
<td>auto</td></tr>
<tr class="enh">
<td>'letter-spacing'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>normal | &lt;length&gt; | inherit</td>
<td>normal</td></tr>
<tr class="yes">
<td>'line-height'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>normal | &lt;number&gt; | &lt;length&gt; | &lt;percentage&gt; |
inherit</td>
<td>normal</td></tr>
<tr class="enh">
<td>'list-style'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>[ 'list-style-type' || 'list-style-position' || 'list-style-image' ] |
inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'list-style-image'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;uri&gt; | none | inherit</td>
<td>none</td></tr>
<tr class="yes">
<td>'list-style-position'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> </td>
<td>inside | outside | inherit</td>
<td>outside</td></tr>
<tr class="yes">
<td>'list-style-type'</td>
<td>disc, decimal, lower-alpha, upper-alpha, none and inherit</td>
<td>disc, decimal, lower-alpha,
upper-alpha, none and inherit</td>
<td>disc | circle | square | decimal | decimal-leading-zero | lower-roman
| upper-roman | lower-greek | lower-alpha | lower-latin | upper-alpha |
upper-latin | hebrew | armenian | georgian | cjk-ideographic | hiragana |
katakana | hiragana-iroha | katakana-iroha | none | inherit</td>
<td>disc</td></tr>
<tr class="yes">
<td>'margin'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;margin-width&gt;{1,4} | inherit</td>
<td>see individual properties</td></tr>
<tr class="yes">
<td>'margin-top' 'margin-right' 'margin-bottom' 'margin-left'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;margin-width&gt; | inherit</td>
<td>0</td></tr>
<tr class="enh">
<td>'orphans'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;integer&gt; | inherit</td>
<td>2</td></tr>
<tr class="enh">
<td>'overflow'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> </td>
<td>visible | hidden | scroll | auto | inherit</td>
<td>visible</td></tr>
<tr class="enh">
<td>'padding'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;padding-width&gt;{1,4} | inherit</td>
<td>see individual properties</td></tr>
<tr class="enh">
<td>'padding-top' 'padding-right' 'padding-bottom' 'padding-left'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;padding-width&gt; | inherit</td>
<td>0</td></tr>
<tr class="yes">
<td>'page'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;identifier&gt; | auto</td>
<td>auto</td></tr>
<tr class="yes">
<td>'page-break-after'</td>
<td> auto | always | inherit </td>
<td>auto | always | inherit </td>
<td>auto | always | avoid | left | right | inherit</td>
<td>auto</td></tr>
<tr class="yes">
<td>'page-break-before'</td>
<td> auto | always | inherit </td>
<td>auto | always | inherit </td>
<td>auto | always | avoid | left | right | inherit</td>
<td>auto</td></tr>
<tr class="yes">
<td>'page-break-inside'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>avoid | auto | inherit</td>
<td>auto</td></tr>
<tr class="enh">
<td>'position'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> <a href="#table_note_pos">&Dagger;</a> </td>
<td>static | relative | absolute | fixed | inherit</td>
<td>static</td></tr>
<tr class="enh">
<td>'right'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;length&gt; | &lt;percentage&gt; | auto | inherit</td>
<td>auto</td></tr>
<tr class="yes">
<td>'size'</td>
<td>[&lt;length&gt;{1,2}| letter | legal | ledger | A4 | A5 | A3 | B4 | B5 ] | auto | portrait | inherit</td>
<td>[&lt;length&gt;{1,2} | letter | legal
| ledger | A4 | A5 | A3 | B4 | B5 ] | auto | portrait | landscape | inherit
</td>
<td>[&lt;length&gt;{1,2} | letter | legal | ledger | A4 | A5 |
A3 | B4 | B5 ] | auto | portrait | landscape | inherit</td>
<td>auto</td></tr>
<tr class="enh">
<td>'table-layout'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>auto | fixed | inherit</td>
<td>auto</td></tr>
<tr class="yes">
<td>'text-align'</td>
<td>left | center | inherit</td>
<td>left | right | center | inherit</td>
<td>left | right | center | justify | &lt;string&gt; | inherit</td>
<td>depends on user agent and writing direction</td></tr>
<tr class="yes">
<td>'text-decoration'</td>
<td>none, underline, and inherit</td>
<td>none, underline, and inherit</td>
<td>none | [ underline || overline || line-through || blink ] | inherit</td>
<td>none</td></tr>
<tr class="yes">
<td>'text-indent'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;length&gt; | &lt;percentage&gt; | inherit</td>
<td>0</td></tr>
<tr class="enh">
<td>'text-transform'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>capitalize | uppercase | lowercase | none | inherit</td>
<td>none</td></tr>
<tr class="enh">
<td>'top'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;length&gt; | &lt;percentage&gt; | auto | inherit</td>
<td>auto</td></tr>
<tr class="enh">
<td>'vertical-align'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em><sup><a href="#table_note_vert_align">1</a></sup></td>
<td>baseline | sub | super | top | text-top | middle | bottom |
text-bottom | &lt;percentage&gt; | &lt;length&gt; | inherit</td>
<td>baseline</td></tr>
<tr class="enh">
<td>'visibility'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>visible | hidden | collapse | inherit</td>
<td>inherit</td></tr>
<tr class="yes">
<td>'white-space'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> </td>
<td>normal | pre | nowrap | inherit</td>
<td>normal</td></tr>
<tr class="enh">
<td>'widows'</td>
<td><em title="MAY In The RFC 2119 Context" class="RFC2119">MAY</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em> </td>
<td>&lt;integer&gt; | inherit</td>
<td>2</td></tr>
<tr class="yes">
<td>'width'</td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td><em title="MUST In The RFC 2119 Context" class="RFC2119">MUST</em></td>
<td>&lt;length&gt; | &lt;percentage&gt; | auto | inherit</td>
<td>auto</td></tr>
</tbody></table>
<p class="tableNotes"> Table Note:</p>
<p class="aTableNote" id="table_note_0">&dagger; Only the single
identifier "pages" that represents the current page number is <em title="REQUIRED in the RFC 2119 context" class="RFC2119">REQUIRED</em>.</p>
<p class="aTableNote" id="table_note_1">* It is <em title="RECOMMENDED in the RFC 2119 context" class="RFC2119">RECOMMENDED</em> that a printer minimally support
"serif," "sans-serif," and "monospace" font families. </p>
<p class="aTableNote" id="table_note_2"> ** The supported values <em title="SHOULD in the RFC 2119 context" class="RFC2119">SHOULD</em> be appropriate to
the fonts available to the printer.</p>
<p class="aTableNote" id="table_note_pos"> &Dagger;
The printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> ignore positioned elements that are placed on the page before the position of the current element in the normal flow.
</p>
<p class="aTableNote" id="table_note_vert_align"> <sup>1</sup>
Vertical alignment is undefined across page boundaries.
</p>
<!-- **************** -->
<!-- SYNTAX -->
<!-- **************** -->
<h2 id="section-syntax">5. CSS Syntax</h2>
<p>The CSS Print Profile uses the same syntax as specified in <cite>Cascading Style Sheets, Level 2, revision 1</cite> (CSS 2.1) [<a
href="#ref-css21">CSS21</a>]. The CSS Print
Profile uses a subset of the values used in CSS 2.1. Specifically:</p>
<ol>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support integer and real numbers
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#q15">Section 4.3.1</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support the following lengths
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#length-units">Section 4.3.2</a>):
<ul>
<li>px</li>
<li>em</li>
<li>ex</li>
<li>in</li>
<li>cm</li>
<li>mm</li>
<li>pt</li>
<li>pc</li>
</ul>
The printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> support other lengths. </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support percentage values
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#percentage-units">Section 4.3.3</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support URI values
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#uri">Section 4.3.4</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support
a "pages" counter value that tracks page numbers
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#counter">Section 4.3.5</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em>
support the following color values:
<ul>
<li>The 16 colors defined in HTML 4.01 [<a href="#ref-html4">HTML4</a>] </li>
<li>A numerical RGB specification
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#color-units">Section 4.3.6</a>) </li>
</ul>
The printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> support other color values. The printer
<em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> support user preferences for colors
([<a href="#ref-css21">CSS 2.1</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/ui.html#system-colors">Section 18.2</a>).</li>
<li>The printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> support user preferences for fonts
([<a href="#ref-css21">CSS 2.1</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/ui.html#system-fonts">Section 18.3</a>).</li>
</ol>
<p>Similarly, the CSS Print Profile requires that conforming user agents
support the character encoding mechanisms specified in CSS 2.1 [<a
href="#ref-css21">CSS21</a>]. Specifically:</p>
<ol>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support priorities specified in
CSS 2.1 [<a
href="#ref-css21">CSS21</a>] to determine a
document's character encoding. </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support the
CSS 2.1 @charset rules.
However, if the character set specified by the @charset
rule of a external style sheet is not supported by the printer, the style sheet
will be ignored.
</li>
</ol>
<!-- *************************************************************** -->
<!-- ASSIGNING PROPERTY VALUES, CASCADING, and INHERITANCE -->
<!-- *************************************************************** -->
<h2 id="section-assigning">6. Assigning Property Values, Cascading, and
Inheritance</h2>
<p>In general, the CSS Print Profile uses the same cascading rules as in CSS 2.1.
Specifically:</p>
<ol>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> assign values as described in
CSS 2.1 ([<a
href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/cascade.html#q1">Section 6.1</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support inheritance as described in
CSS 2.1 ([<a
href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/cascade.html#inheritance">Section 6.2</a>). </li>
<li>A
printer supporting Enhanced Layout Extension conformance
<em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support the
CSS 2.1 @import rules as specified in CSS 2.1 ([<a
href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/cascade.html#at-import">Section 6.3</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support author style sheets. The printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em>
support user or user-agent style sheets
([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/cascade.html#cascade">Section 6.4</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support all
CSS 2.1 cascading mechanisms
([<a href="#ref-css21">CSS21</a>] Sections
<a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/cascade.html#cascading-order">6.4.1</a>-<a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/cascade.html#q13">6.4.4</a>). </li>
</ol>
<!-- ******************** -->
<!-- MEDIA TYPES -->
<!-- ******************** -->
<h2 id="section-mediatypes">7. Media Types</h2>
<p>A CSS Print Profile conforming user agent <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> be able to process
media-dependent style sheets as specified in CSS 2.1 ([<a
href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/media.html">Section 7</a>).
Specifically:</p>
<ol>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> support the
CSS 2.1 @media rules as specified in CSS 2.1 ([<a
href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/media.html">Section 7</a>). </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> accept and process style sheets that target the
<code>print</code> media type. </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> accept and process style sheets that target the
<code>all</code> media type. </li>
<li>The printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> accept style sheets that contain other (non-print)
media-dependent style sheets. </li>
<li>The printer <em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> process other media types (such as
<code>projection</code> or
<code>handheld</code>). </li>
</ol>
<h2 id="section-interactions">8. CSS Print Profile Properties and User Agent interactions</h2>
<p>The following sections relax or otherwise modify the conformance requirements.</p>
<h3 id="s.8.1">8.1 Nested Floats, Divs, and Absolutely Positioned Boxes</h3>
<p>
Authors are cautioned that the nesting of floats, divs, and absolutely positioned boxes within
themselves, each other, and table cells should be used carefully, since the
nesting depth of these constructs is printer and implementation dependent.</p>
<h3 id="s.8.2">8.2 Page Breaks</h3>
<p>If <code>page-break-inside: avoid</code> is specified for a long element and
the printer is unable to buffer the entire element before committing it to
paper, it <em title="SHOULD in the RFC 2119 context" class="RFC2119">SHOULD</em> force a page break to occur before the long element and begin
the element starting at the top of the next page. If the long element starts at
the top of a page and exceeds the page length, the printer <em title="SHALL in the RFC 2119 context" class="RFC2119">SHALL</em> print as much
as possible on the first page and then resume that element on the next and
subsequent pages as <em title="REQUIRED in the RFC 2119 context" class="RFC2119">REQUIRED</em>
to preserve the content. A printer
<em title="MAY in the RFC 2119 context" class="RFC2119">MAY</em> perform scaling
to fit the long element on a single page; but this is not recommended unless the
scaling required is minimal.</p>
<h3 id="s.8.3">8.3 Page Size</h3>
<p>Due to a printer's mechanical limitations, the actual printable area of the
page is often less than the page size.&nbsp;
However, a printer <em title="SHOULD in the RFC 2119 context" class="RFC2119">SHOULD</em> be guided by the page size value supplied by the CSS size property when
choosing the media to print on.</p>
<p>See
<a href="http://www.w3.org/TR/css3-page/#renderingpages">
http://www.w3.org/TR/css3-page/#renderingpages</a> in <cite>CSS3
Paged Media</cite> [<a
href="#ref-pgmedia">PAGEMEDIA</a>] for a discussion of fitting contents to media
sheets.</p>
<h3 id="s.8.4">8.4 Default Style Sheets </h3>
<p>This entire section is informative.</p>
<p><a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/sample.html">Appendix D</a> of <cite>Cascading Style Sheets, Level 2, revision 1</cite> ([<a href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/sample.html">Appendix D</a>)
provides a sample style sheet.
This sheet uses several properties that are not required of a conforming printer, even
ones supporting the <a href="#s2.1">enhanced layout extensions</a> (section 2.1).</p>
<h4 id="s.8.5.1">8.5.1 Default Style Sheet Guidelines for printers</h4>
<p>
Developers of printers that do not implement the enhanced layout facilities
are encouraged but not required to adhere to the following implementation guidelines
that address unsupported properties. These guidelines are presented to promote
consistency between printer implementations.
</p>
<!-- Editorial Annotation -->
<p class="editorial">The guidelines below are annotated to show derivation of the guideline from the
<cite>Cascading Style Sheets, Level 2, revision 1</cite>
[<a href="#ref-css21">CSS21</a>] style sheet.
</p>
<ol>
<li> The <code> address, blockquote, body, dd, div, dl, dt, h1, h2, h3, h4, h5, h6,
hr, object, ol, p, pre, </code> and <code> ul</code> elements
should be treated as if their display property were set to <code>block</code>.
</li>
<li>The <code>li</code> element should be treated as if its display property were set to <code>list-items</code>.
</li>
<li> The table elements, <code>table, tr, td, th,</code> and <code>caption</code>, should have their
standard meaning and display treatments: <code>table, table-row, table-cell,</code> and <code>table-caption</code>.
</li>
<li> The elements <code>base, br, html, head, link, meta, param, style </code> and <code> title</code> should be treated as if their display property were set to <code>none</code>.
</li>
<li>The remaining elements,<code>
a, abbr, acronym, b, big, cite, code, dfn, em, form, i, img,
input, kbd, option, samp, small, select, strong, sub, sup, textarea, tt,
</code> and <code> var</code>,
should be treated as if their display property were set to <code>inline</code>.
A display property of <code> inline </code> for the elements <code>img, input, select,</code> and <code> textarea </code>
allows document authors a flexibility not available if their display property were <code>block</code>.
<div class="editorial">
The above guidelines come from the following portion of the CSS 2.1 default style sheet:
<pre><code>
ADDRESS, BLOCKQUOTE, BODY, DD, DIV, DL, DT, FIELDSET, FORM,
FRAME, FRAMESET, H1, H2, H3, H4, H5, H6, IFRAME, NOFRAMES,
OBJECT, OL, P, UL, APPLET, CENTER, DIR, HR, MENU,
{ display: block }
LI { display: list-item }
HEAD { display: none }
TABLE { display: table }
TR { display: table-row }
THEAD { display: table-header-group }
TBODY { display: table-row-group }
TFOOT { display: table-footer-group }
COL { display: table-column }
COLGROUP { display: table-column-group }
TD, TH { display: table-cell }
CAPTION { display: table-caption }
</code></pre>
</div></li>
<li> The edges of the content of <code>body</code> element should have 0.1 inch wide inset from the
left, top, right, and bottom of the printable area of the page.
Margin calculations will start from these offsets.
<div class="editorial">
<!-- Editorial Annotation -->
The .1 inch figure comes from the calculation that 8 px divided by 75px/inch ( a normal display resolution) is about .1 inches.
<pre><code>
BODY { padding: 8px;
line-height: 1.33 }
</code></pre>
</div>
</li>
<li>The content of the <code>sub</code> element should be treated as if its vertical-align property
were set to <code>sub</code>. Similarly, the content of the <code>sup</code> element should be treated
as if its vertical-align property were set to <code>sup</code>.
<div class="editorial">
<!-- Editorial Annotation -->
<pre><code>
SUB { vertical-align: sub }
SUP { vertical-align: super }
</code></pre>
</div>
</li>
<li>The <code>hr</code> element should be treated as if its area, as defined by its height and width, were outlined
by a one pixel thick, solid line.
The default line should be one pixel
high and the width of the containing box.
<div class="editorial">
<!-- Editorial Annotation -->
<pre><code>
HR { border: 1px inset }
</code></pre>
</div>
</li>
<li>The lower case letters of the content of the <code>abbr</code> and <code>acronym</code> elements should be rendered as scaled capital
letters, at approximately 75% of their size at the current font size. Upper case letters will be unchanged. Printers may
also choose to simply render lower case letters as upper case letters without scaling.
<div class="editorial">
<!-- Editorial Annotation -->
The 75% figure above is only one way to approximate small-caps. The printer is free to use
its own rendering of small-caps.
<pre><code>
ABBR, ACRONYM { font-variant: small-caps;
letter-spacing: 0.1em }
</code></pre>
</div>
</li>
<li>Page break avoidance both inside and after is removed for the
elements <code> h1, h2, h3, h4, h5,</code> and
<code>h6</code>. Therefore, the printer is not
required to move the content of these elements from the bottom of
one page to the top of the next.
<div class="editorial">
<!-- Editorial Annotation -->
<pre><code>
H1, H2, H3,
H4, H5, H6 { page-break-after: avoid;
page-break-inside: avoid }
</code></pre>
</div>
</li>
<li>The printer
need not avoid page breaks before the <code> ul, ol,</code> and
<code>dl</code> elements.
<div class="editorial">
<!-- Editorial Annotation -->
<pre><code>
UL, OL, DL { page-break-before: avoid }
</code></pre>
</div>
</li>
<li>The printer
may choose its own, fixed value for the padding properties of
elements where the <cite>Cascading Style Sheets,
Level 2, revision 1</cite> <a
href="http://www.w3.org/TR/2004/CR-CSS21-20040225/box.html">box model</a> ([<a
href="#ref-css21">CSS21</a>], <a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/box.html">Section 8</a>) applies. </li>
<li>The content
of all elements, except <code>hr</code>, should be treated as if the
element's border-style property were set to <code>none</code>. </li>
<li> The content of all elements may be treated as if the element's
overflow property were set to <code>visible</code> and the clip
property set to <code>auto</code>.
<div class="editorial">
<!-- Editorial Annotation -->
This guideline suggests consistent behavior among implementations.
</div>
</li>
<li>The content of all elements
may be treated as if the element's positioning property were set to
<code>static</code>.
<div class="editorial">
<!-- Editorial Annotation -->
Elements should be treated as if they are in the
normal flow.
</div>
</li>
<li> Tables should be treated as if the
table-layout property were set to <code>fixed</code>.
<div
class="editorial">
<!-- Editorial Annotation -->
This guideline promotes consistency since
<ul>
<li> the table-layout property is not mandated</li>
<li> There isn't a CSS default style sheet rule for this property</li>
</ul>
</div>
</li>
</ol>
<p>The following style sheet is a modification of the sample sheet in
<a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/sample.html">Appendix D</a> of
<cite>Cascading Style Sheets, Level 2, revision 1</cite> ([<a
href="#ref-css21">CSS21</a>], <a
href="http://www.w3.org/TR/2004/CR-CSS21-20040225/sample.html">Appendix D</a>) and
depends on the above guidelines.
</p>
<pre style="margin-left: .25in;">th { font-weight: bolder; text-align: center }
caption { text-align: center }
body { line-height: 1.33 }
h1 { font-size: 2em; margin: .67em 0 }
h2 { font-size: 1.5em; margin: .83em 0 }
h3 { font-size: 1.17em; margin: 1em 0 }
h4, p,
blockquote, ul,
form,
ol, dl { margin: 1.33em 0 }
h5 { font-size: .83em; line-height: 1.17em; margin: 1.67em 0 }
h6 { font-size: .67em; margin: 2.33em 0 }
h1, h2, h3, h4,
h5, h6, b,
strong { font-weight: bolder }
blockquote { margin-left: 40px; margin-right: 40px }
i, cite, em,
var, address { font-style: italic }
pre, tt, code,
kbd, samp { font-family: monospace }
pre { white-space: pre }
big { font-size: 1.17em }
small, sub, sup { font-size: .83em }
ol, ul, dd { margin-left: 40px }
ol { list-style-type: decimal }
ol ul, ul ol,
ul ul, ol ol { margin-top: 0; margin-bottom: 0 }
br { content: &quot;\A&quot; }
@media print {
@page { margin: 10% }
blockquote,
pre { page-break-inside: avoid }
}
</pre>
<h4 id="s.8.5.2">8.5.2 Default Style Sheet Guidelines for Enhanced Layout printers</h4>
<p>Developers of printers
conforming to the <a href="#s2.1">enhanced
layout extensions</a> (section 2.1) <em title="MUST in the RFC 2119 context" class="RFC2119">MUST</em> implement more of
<cite>Cascading Style Sheets, Level 2, revision 1</cite> [<a
href="#ref-css21">CSS21</a>] than conforming
printers, although
the set of properties and their values is still less than
complete.
</p>
<p>
Developers of printers
are encouraged but not required to adhere to
the following implementation guidelines that address unsupported
properties.
</p>
<ol>
<li> The table elements, <code>table, tr, td, th,</code> and
<code>caption</code>, should have their standard meaning and display
treatments: <code>table, table-row, table-cell,</code> and
<code>table-caption</code>. </li>
<li>
The rendering of the hr element is implementation dependent since support of the <code>inset</code> value of the border-style property is not required.
</li>
<li>Page break avoidance both inside and after is removed for the
elements <code> h1, h2, h3, h4, h5,</code> and
<code>h6</code>. Therefore, the printer
need not be concerned with moving the content
of these elements from the bottom of one page to the top of the next.
</li>
<li>The printer
need not avoid page breaks before the <code> ul, ol,</code> and
<code>dl</code> elements. </li>
</ol>
<p>The following style sheet is a modification of the sample sheet in
<a href="http://www.w3.org/TR/2004/CR-CSS21-20040225/sample.html">Appendix D</a> of
[<a href="#ref-css21">CSS21</a>] and depends on the above guidelines.
</p>
<pre style="margin-left: .25in;">address,
blockquote,
body, dd, div,
dl, dt,
form,
h1, h2, h3, h4,
h5, h6,
object, ol, p,
ul,
hr, pr e { display: block }
li { display: list-item }
head { display: none }
th { font-weight: bolder; text-align: center }
caption { text-align: center }
body { padding: 8px; line-height: 1.33 }
h1 { font-size: 2em; margin: .67em 0 }
h2 { font-size: 1.5em; margin: .83em 0 }
h3 { font-size: 1.17em; margin: 1em 0 }
h4, p,
blockquote, ul,
form,
ol, dl, { margin: 1.33em 0 }
h5 { font-size: .83em; line-height: 1.17em; margin: 1.67em 0 }
h6 { font-size: .67em; margin: 2.33em 0 }
h1, h2, h3, h4,
h5, h6, b,
strong { font-weight: bolder }
blockquote { margin-left: 40px; margin-right: 40px }
i, cite, em,
var, address { font-style: italic }
pre, tt, code,
kbd, samp { font-family: monospace }
pre { white-space: pre }
big { font-size: 1.17em }
small, sub, sup { font-size: .83em }
hr { border: 1px }
ol, ul, dd { margin-left: 40px }
ol { list-style-type: decimal }
ol ul, ul ol,
ul ul, ol ol { margin-top: 0; margin-bottom: 0 }
br { content: &quot;\A&quot; }
@media print {
@page { margin: 10% }
blockquote,
pre { page-break-inside: avoid }
}
</pre>
<!-- ************************** -->
<!-- acknowledgements -->
<!-- ************************** -->
<h2 id="section-ack">9. Acknowledgements</h2>
<p>This section is informative.</p>
<p>This specification was prepared by the W3C CSS Working Group. The
participants at the time of publication were:</p>
<p><em>List will be inserted when this document becomes a Recommendation.</em></p>
<p>This specification is based on the specification of
the same name, <cite>CSS Print Profile</cite> [<a href="#ref_css_pp">CSSPP</a>] from
the <a href="http://www.pwg.org/">Printer Working Group</a>, a
program of and through the IEEE Industry Standards and Technology
Organization, Inc. The editor wishes
to express her gratitude to all those who contributed to it.</p>
<!-- ******************* -->
<!-- REFERENCES -->
<!-- ******************* -->
<h2 id="section-references">Appendix A. References</h2>
<h3 id="section-normref"> A.1 Normative References</h3>
<dl>
<dt class="normref" id="ref-css21">[CSS21] </dt> <dd><cite><a
href="http://www.w3.org/TR/2006/WD-CSS21-20060411/">Cascading Style
Sheets, Level 2, revision 1</a></cite>, B. Bos, <i>et al.</i>, World Wide Web
Consortium, 11 April 2006. Available at <a href="http://www.w3.org/TR/2006/WD-CSS21-20060411/">
http://www.w3.org/TR/2006/WD-CSS21-20060411/</a>. The <a
href="http://www.w3.org/TR/CSS21/">latest version</a> is
available at http://www.w3.org/TR/CSS21. </dd>
<dt class="normref" id="ref-pgmedia">[PAGEMEDIA]</dt>
<dd> <cite>
<a href="http://www.w3.org/TR/css3-page/">CSS3 Module: Paged Media</a></cite>,
W3C Working Draft, H. Lie and M. Grant, World Wide Web Consortium,
10 October 2006.
Available at
<a href="http://www.w3.org/TR/2006/WD-css3-page-20061010/">
http://www.w3.org/TR/2006/WD-css3-page-20061010</a>/.
The latest version is available at
<a href="http://www.w3.org/TR/css3-page/">
http://www.w3.org/TR/css3-page/
</a>.</dd>
<dt class="normref" id="ref-RFC2119">[RFC2119] </dt>
<dd><cite><a href="http://www.ietf.org/rfc/rfc2119.txt">RFC2119 -
Key words for use in RFCs to Indicate Requirement
Levels</a></cite>, S. Bradner, The Internet Engineering Task
Force, March 1997. It is available from <a
href="http://www.ietf.org/rfc/rfc2119.txt?number=2119">
http://www.ietf.org/rfc/rfc2119.txt?number=2119</a>
</dd>
<!-- Update link to point to CR, as soon as it is published: -->
</dl>
<h3 id="section-informref"> A.2 Informative References</h3>
<dl>
<dt id="ref_css_pp">[CSSPP]</dt>
<dd><cite><a
href="http://www.pwg.org/xhtml-print/HTML-Version/CSS-Print.html">CSS
Print Profile</a></cite>, PWG Proposed Standard 5102.2, D. Wright, J. Bigelow,
eds. 28 March 2003. Available at: <a
href="http://www.pwg.org/xhtml-print/HTML-Version/CSS-Print.html">
http://www.pwg.org/xhtml-print/HTML-Version/CSS-Print.html</a>
</dd>
<dt id="ref-cssmobile">[CSSMOBILE] </dt>
<dd><a href="http://www.w3.org/TR/css-mobile"> CSS Mobile Profile 1.0</a>,
W3C Candidate Recommendation 25 July 2002, T. Wugofski, D. Dominiak, R. Stark, T. Roy,
at <a href="http://www.w3.org/TR/css-mobile">http://www.w3.org/TR/css-mobile</a>. </dd>
<dt id="ref-html4">[HTML4] </dt>
<dd><cite><a
href="http://www.w3.org/TR/1999/REC-html401-19991224/">HTML 4.01
Specification</a></cite>, D. Raggett, A. Le Hors, and I.
Jacobs, Editors. World Wide Web Consortium, 17 December 1997, revised
24 December 1999. This version of the HTML 4.01 Recommendation is
http://www.w3.org/TR/1998/REC-html40-19980424. The <a
href="http://www.w3.org/TR/html4/">latest version of HTML
4</a> is available at http://www.w3.org/TR/html4.</dd>
<dt id="ref-XHTMLPrint">[XHTMLPRINT]</dt>
<dd><cite><a
href="http://www.w3.org/TR/2006/REC-xhtml-print-20060920/">
XHTML-Print</a></cite>,
W3C Recommendation, J. Bigelow and M. Grant, World Wide Web Consortium,
20 September 2006.
Available from
<a href="http://www.w3.org/TR/2006/REC-xhtml-print-20060920/">
http://www.w3.org/TR/2006/REC-xhtml-print-20060920/</a>.
The latest version is available at
<a href="http://www.w3.org/TR/xhtml-print/">
http://www.w3.org/TR/xhtml-print/</a>.</dd>
<dt>&nbsp;</dt>
</dl>
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