Editorial: Fix for #759 (#885)

Clarify if an author applies an ARIA global attribute on an element with an inherited role of presentation, the user agent should expose the element to the accessibility tree.

index.html

@@ -5063,7 +5063,7 @@ <h5>Note regarding the ARIA 1.1 <rref>none</rref> role.</h5>
 				<section id="conflict_resolution_presentation_none">
 					<h5>Presentational Roles Conflict Resolution</h5>
 					<p>There are a number of ways presentational role conflicts are resolved.</p>
-					<p>Host languages elements having implicit presentational roles for which no roles may be applied MUST never be exposed in the accessibility tree, with this exception: user agents MUST always expose global WAI-ARIA states and properties to accessibility APIs. In this case, the user agent ignores the <code>presentation</code> role and exposes the element according to its implicit native semantics. However, user agents MUST ignore any non-global, role-specific WAI-ARIA states and properties, unless it is on an inherited presentational role where an explicit role is applied.</p>
+					<p>Host languages elements having implicit presentational roles for which no roles may be applied MUST never be exposed in the accessibility tree, with this exception: user agents MUST always expose global WAI-ARIA states and properties to accessibility APIs. In this case, the user agent ignores the explicit or inherited <code>presentation</code> role and exposes the element as described in the accessibility API mappings for presentational objects which remain in the accessibility tree. However, user agents MUST ignore any non-global, role-specific WAI-ARIA states and properties, unless it is on an inherited presentational role where an explicit role is applied.</p>
 					<p>For example, <pref>aria-haspopup</pref> is a global attribute and would always be applied; <pref>aria-level</pref> is not a global attribute and would therefore only apply if the element was not in a presentational state.</p>
 					<pre class="example highlight">
 						<span class="comment">&lt;!-- 1. [role="presentation"] is ignored due to the global aria-haspopup property. --&gt;</span>