[e] (0) Try to tweak the alt='' text repair requirements to be accept…

…able to more HTMLWG members.

git-svn-id: http://svn.whatwg.org/webapps@4649 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -110,7 +110,7 @@
 
   <header class=head id=head><p><a class=logo href=http://www.whatwg.org/ rel=home><img alt=WHATWG src=/images/logo></a></p>
    <hgroup><h1>Web Applications 1.0</h1>
-    <h2 class="no-num no-toc">Draft Standard &mdash; 4 February 2010</h2>
+    <h2 class="no-num no-toc">Draft Standard &mdash; 5 February 2010</h2>
    </hgroup><p>You can take part in this work. <a href=http://www.whatwg.org/mailing-list>Join the working group's discussion list.</a></p>
    <p><strong>Web designers!</strong> We have a <a href=http://blog.whatwg.org/faq/>FAQ</a>, a <a href=http://forums.whatwg.org/>forum</a>, and a <a href=http://www.whatwg.org/mailing-list#help>help mailing list</a> for you!</p>
    <!--<p class="impl"><strong>Implementors!</strong> We have a <a href="http://www.whatwg.org/mailing-list#implementors">mailing list</a> for you too!</p>-->
@@ -18462,11 +18462,18 @@ <h4 id=the-img-element><span class=secno>4.8.3 </span>The <dfn><code>img</code><
 
   <p>User agents may always provide the user with the option to
   display any image, or to prevent any image from being
-  displayed. User agents may also apply image analysis heuristics to
-  help the user make sense of the image when the user is unable to
-  make direct use of the image, e.g. due to a visual disability or
-  because they are using a text terminal with no graphics
-  capabilities.</p>
+  displayed. User agents may also apply other heuristics to help the
+  user make sense of the image when the user is unable to make direct
+  use of the image, e.g. due to a visual disability or because they
+  are using a text terminal with no graphics capabilities. Such
+  heuristics could include, for instance, optical character
+  recognition (OCR) of text found within the image.</p>
+
+  <p class=warning>While user agents are encouraged to repair cases
+  of missing <code title=attr-img-alt><a href=#attr-img-alt>alt</a></code> attributes, authors
+  must not rely on such behaviour. <a href=#alt>Requirements for
+  providing text to act as an alternative for images are
+  described in detail below.</a></p>
 
   <p>The <em>contents</em> of <code><a href=#the-img-element>img</a></code> elements, if any, are
   ignored for the purposes of rendering.</p>

index

@@ -112,7 +112,7 @@
 
   <header class=head id=head><p><a class=logo href=http://www.whatwg.org/ rel=home><img alt=WHATWG src=/images/logo></a></p>
    <hgroup><h1>HTML5 (including next generation additions still in development)</h1>
-    <h2 class="no-num no-toc">Draft Standard &mdash; 4 February 2010</h2>
+    <h2 class="no-num no-toc">Draft Standard &mdash; 5 February 2010</h2>
    </hgroup><p>You can take part in this work. <a href=http://www.whatwg.org/mailing-list>Join the working group's discussion list.</a></p>
    <p><strong>Web designers!</strong> We have a <a href=http://blog.whatwg.org/faq/>FAQ</a>, a <a href=http://forums.whatwg.org/>forum</a>, and a <a href=http://www.whatwg.org/mailing-list#help>help mailing list</a> for you!</p>
    <!--<p class="impl"><strong>Implementors!</strong> We have a <a href="http://www.whatwg.org/mailing-list#implementors">mailing list</a> for you too!</p>-->
@@ -18361,11 +18361,18 @@ interface <dfn id=htmlimageelement>HTMLImageElement</dfn> : <a href=#htmlelement
 
   <p>User agents may always provide the user with the option to
   display any image, or to prevent any image from being
-  displayed. User agents may also apply image analysis heuristics to
-  help the user make sense of the image when the user is unable to
-  make direct use of the image, e.g. due to a visual disability or
-  because they are using a text terminal with no graphics
-  capabilities.</p>
+  displayed. User agents may also apply other heuristics to help the
+  user make sense of the image when the user is unable to make direct
+  use of the image, e.g. due to a visual disability or because they
+  are using a text terminal with no graphics capabilities. Such
+  heuristics could include, for instance, optical character
+  recognition (OCR) of text found within the image.</p>
+
+  <p class=warning>While user agents are encouraged to repair cases
+  of missing <code title=attr-img-alt><a href=#attr-img-alt>alt</a></code> attributes, authors
+  must not rely on such behaviour. <a href=#alt>Requirements for
+  providing text to act as an alternative for images are
+  described in detail below.</a></p>
 
   <p>The <em>contents</em> of <code><a href=#the-img-element>img</a></code> elements, if any, are
   ignored for the purposes of rendering.</p>

source

@@ -19653,11 +19653,18 @@ interface <dfn>HTMLImageElement</dfn> : <span>HTMLElement</span> {
 
   <p>User agents may always provide the user with the option to
   display any image, or to prevent any image from being
-  displayed. User agents may also apply image analysis heuristics to
-  help the user make sense of the image when the user is unable to
-  make direct use of the image, e.g. due to a visual disability or
-  because they are using a text terminal with no graphics
-  capabilities.</p>
+  displayed. User agents may also apply other heuristics to help the
+  user make sense of the image when the user is unable to make direct
+  use of the image, e.g. due to a visual disability or because they
+  are using a text terminal with no graphics capabilities. Such
+  heuristics could include, for instance, optical character
+  recognition (OCR) of text found within the image.</p>
+
+  <p class="warning">While user agents are encouraged to repair cases
+  of missing <code title="attr-img-alt">alt</code> attributes, authors
+  must not rely on such behaviour. <a href="#alt">Requirements for
+  providing text to act as an alternative for images</span> are
+  described in detail below.</p>
 
   <p>The <em>contents</em> of <code>img</code> elements, if any, are
   ignored for the purposes of rendering.</p>