[a] (0) Elaborate on <article> in one-article documents, in case of d…

…oubt.

Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=17975
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@7608 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -17294,6 +17294,11 @@ <h4 id=the-article-element><span class=secno>4.4.2 </span>The <dfn><code>article
   provide the publication date for an <code><a href=#the-article-element>article</a></code>
   element, using one of the CreativeWork subtypes.</p>
 
+  <p>When the main content of the page (i.e. excluding footers, headers, navigation blocks, and
+  sidebars) is all one single self-contained composition, that content may be marked with an
+  <code><a href=#the-article-element>article</a></code>, but it is technically redundant in that case (since it's self-evident that
+  the page is a single composition, as it is a single document).</p>
+
   <div class=example id=article-example>
 
    <p>This example shows a blog post using the <code><a href=#the-article-element>article</a></code>

index

@@ -17294,6 +17294,11 @@ not-slash     = %x0000-002E / %x0030-10FFFF
   provide the publication date for an <code><a href=#the-article-element>article</a></code>
   element, using one of the CreativeWork subtypes.</p>
 
+  <p>When the main content of the page (i.e. excluding footers, headers, navigation blocks, and
+  sidebars) is all one single self-contained composition, that content may be marked with an
+  <code><a href=#the-article-element>article</a></code>, but it is technically redundant in that case (since it's self-evident that
+  the page is a single composition, as it is a single document).</p>
+
   <div class=example id=article-example>
 
    <p>This example shows a blog post using the <code><a href=#the-article-element>article</a></code>

source

@@ -18272,6 +18272,11 @@ not-slash     = %x0000-002E / %x0030-10FFFF
   provide the publication date for an <code>article</code>
   element, using one of the CreativeWork subtypes.</p>
 
+  <p>When the main content of the page (i.e. excluding footers, headers, navigation blocks, and
+  sidebars) is all one single self-contained composition, that content may be marked with an
+  <code>article</code>, but it is technically redundant in that case (since it's self-evident that
+  the page is a single composition, as it is a single document).</p>
+
   <div id="article-example" class="example">
 
    <p>This example shows a blog post using the <code>article</code>