[e] (0) update relationship to html4

git-svn-id: http://svn.whatwg.org/webapps@3229 340c8d12-0b0e-0410-8428-c7bf67bfef74
whatwg · Jun 12, 2009 · b4e652f · b4e652f
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@@ -1266,11 +1266,23 @@
 
   <p><em>This section is non-normative.</em></p>
 
-  <p>This specification represents a new version of HTML4, along with
-  a new version of the associated DOM2 HTML API. Migration from HTML4
-  to the format and APIs described in this specification should in
-  most cases be straightforward, as care has been taken to ensure that
-  backwards-compatibility is retained. <a href=#refsHTML4>[HTML4]</a> <a href=#refsDOM2HTML>[DOM2HTML]</a></p>
+  <p>This specification describes a new revision of the HTML language
+  and its associated DOM API.</p>
+
+  <p>The requirements in this specification for features that were
+  already in HTML4 and DOM2 HTML are based primarily on the
+  implementation and deployment experience collected over the past ten
+  years. Some features have been removed from the language, based on
+  best current practices; implementation requirements for some of
+  these, as well as for non-standard features that have nonetheless
+  garnered wide use, are still included in this specification to allow
+  implementations to continue supporting legacy content.  <a href=#refsHTML4>[HTML4]</a> <a href=#refsDOM2HTML>[DOM2HTML]</a></p>
+
+  <p>A separate document has been published by the W3C HTML working
+  group to provide a more detailed reference of the differences
+  between this specification and the language described in the HTML 4
+  specification. <a href=#refsHTMLDIFF>[HTMLDIFF]</a></p>
+
 
 
   <h4 id=relationship-to-xhtml-1.x><span class=secno>1.6.2 </span>Relationship to XHTML 1.x</h4>

diff --git a/source b/source
@@ -196,14 +196,26 @@
 
   <p><em>This section is non-normative.</em></p>
 
-  <p>This specification represents a new version of HTML4, along with
-  a new version of the associated DOM2 HTML API. Migration from HTML4
-  to the format and APIs described in this specification should in
-  most cases be straightforward, as care has been taken to ensure that
-  backwards-compatibility is retained. <a
+  <p>This specification describes a new revision of the HTML language
+  and its associated DOM API.</p>
+
+  <p>The requirements in this specification for features that were
+  already in HTML4 and DOM2 HTML are based primarily on the
+  implementation and deployment experience collected over the past ten
+  years. Some features have been removed from the language, based on
+  best current practices; implementation requirements for some of
+  these, as well as for non-standard features that have nonetheless
+  garnered wide use, are still included in this specification to allow
+  implementations to continue supporting legacy content.  <a
   href="#refsHTML4">[HTML4]</a> <a
   href="#refsDOM2HTML">[DOM2HTML]</a></p>
 
+  <p>A separate document has been published by the W3C HTML working
+  group to provide a more detailed reference of the differences
+  between this specification and the language described in the HTML 4
+  specification. <a href="#refsHTMLDIFF">[HTMLDIFF]</a></p>
+
+
 
   <h4>Relationship to XHTML 1.x</h4>