fix(reword): use 'on a page' instead of 'within any document or appli…

…cation' (#1754)

index.html

@@ -1469,7 +1469,7 @@ <h2>Definition of Roles</h2>
   				[=user agents=] SHOULD treat elements with role <code>banner</code> as navigational <a>landmarks</a>.
   				[=user agents=] MAY enable users to quickly navigate to elements with role <code>banner</code>.</p>
 				<!-- keep the following paragraphs synced with the similar paragraphs in #main and #contentinfo-->
-				<p>Within any <rref>document</rref> or <rref>application</rref>, the author SHOULD mark no more than one <a>element</a> with the <code>banner</code> <a>role</a>.</p>
+				<p>The author SHOULD mark no more than one <a>element</a> on a page with the <code>banner</code> <a>role</a>.</p>
 				<p class="note">Because <code>document</code> and <code>application</code> elements can be nested in the <abbr title="Document Object Model">DOM</abbr>, they may have multiple <code>banner</code> elements as <abbr title="Document Object Model">DOM</abbr> descendants, assuming each of those is associated with different document nodes, either by a DOM nesting (e.g., <rref>document</rref> within <rref>document</rref>) or by use of the <pref>aria-owns</pref> <a>attribute</a>.</p>
 			</div>
 			<table class="role-features">
@@ -2766,7 +2766,7 @@ <h2>Definition of Roles</h2>
   				[=user agents=] SHOULD treat elements with role <code>contentinfo</code> as navigational <a>landmarks</a>.
   				[=user agents=] MAY enable users to quickly navigate to elements with role <code>contentinfo</code>.</p>
 				<!-- keep the following paragraphs synced with the similar paragraphs in #banner and #main -->
-				<p>Within any <rref>document</rref> or <rref>application</rref>, the author SHOULD mark no more than one <a>element</a> with the <code>contentinfo</code> role.</p>
+				<p>The author SHOULD mark no more than one <a>element</a> on a page with the <code>contentinfo</code> role.</p>
 				<p class="note">Because <code>document</code> and <code>application</code> elements can be nested in the <abbr title="Document Object Model">DOM</abbr>, they may have multiple <code>contentinfo</code> elements as <abbr title="Document Object Model">DOM</abbr> descendants, assuming each of those is associated with different document nodes, either by a DOM nesting (e.g., <rref>document</rref> within <rref>document</rref>) or by use of the <pref>aria-owns</pref> attribute.</p>
 			</div>
 			<table class="role-features">
@@ -4853,7 +4853,7 @@ <h5>Note regarding the ARIA 1.3 <code>image</code> role.</h5>
   				[=user agents=] SHOULD treat elements with role <code>main</code> as navigational <a>landmarks</a>.
   				[=user agents=] MAY enable users to quickly navigate to elements with role <code>main</code>.</p>
 				<!-- keep the following paragraphs synced with the similar paragraphs in #banner and #contentinfo -->
-				<p>Within any <rref>document</rref> or <rref>application</rref>, the author SHOULD mark no more than one <a>element</a> with the <code>main</code> role.</p>
+				<p>The author SHOULD mark no more than one <a>element</a> on a page with the <code>main</code> role.</p>
 				<p class="note">Because <code>document</code> and <code>application</code> elements can be nested in the <abbr title="Document Object Model">DOM</abbr>, they may have multiple <code>main</code> elements as <abbr title="Document Object Model">DOM</abbr> descendants, assuming each of those is associated with different document nodes, either by a DOM nesting (e.g., <rref>document</rref> within <rref>document</rref>) or by use of the <pref>aria-owns</pref> attribute.</p>
 			</div>
 			<table class="role-features">
@@ -7512,7 +7512,7 @@ <h5>Presentational Role Inheritance</h5>
 		<div class="role" id="section">
 			<rdef>section</rdef>
 			<div class="role-description">
-				<p>A renderable structural containment unit in a document or application.</p>
+				<p>A renderable structural containment unit on a page.</p>
 				<p><code>section</code> is an <a href="#isAbstract">abstract role</a> used for the ontology. Authors MUST NOT use <code>section</code> role in content.</p>
 			</div>
 			<table class="role-features">