diff --git a/index.html b/index.html
index 761f38d78..d29a63f01 100644
--- a/index.html
+++ b/index.html
@@ -5575,9 +5575,10 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 						<th class="role-scope-head" scope="row">Required Context Role:</th>
 						<td class="role-scope">
 							<ul>
-								<li><rref>group</rref></li>
 								<li><rref>menu</rref></li>
 								<li><rref>menubar</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>menu</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>menubar</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -5677,9 +5678,10 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 						<th class="role-scope-head" scope="row">Required Context Role:</th>
 						<td class="role-scope">
 							<ul>
-								<li><rref>group</rref></li>
 								<li><rref>menu</rref></li>
 								<li><rref>menubar</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>menu</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>menubar</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -5777,9 +5779,10 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 						<th class="role-scope-head" scope="row">Required Context Role:</th>
 						<td class="role-scope">
 							<ul>
-								<li><rref>group</rref></li>
 								<li><rref>menu</rref></li>
 								<li><rref>menubar</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>menu</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>menubar</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -6030,8 +6033,8 @@ <h5>Note regarding the ARIA 1.1 <code>none</code> role.</h5>
 						<th class="role-scope-head" scope="row">Required Context Role:</th>
 						<td class="role-scope">
 							<ul>
-								<li><rref>group</rref></li>
 								<li><rref>listbox</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>listbox</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -7003,9 +7006,11 @@ <h5>Presentational Roles Conflict Resolution</h5>
 						<td class="role-scope">
 							<ul>
 								<li><rref>grid</rref></li>
-								<li><rref>rowgroup</rref></li>
 								<li><rref>table</rref></li>
 								<li><rref>treegrid</rref></li>
+								<li><rref>rowgroup</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>grid</rref></li>
+								<li><rref>rowgroup</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>table</rref></li>
+								<li><rref>rowgroup</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>treegrid</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -9933,8 +9938,8 @@ <h5>Presentational Roles Conflict Resolution</h5>
 						<th class="role-scope-head" scope="row">Required Context Role:</th>
 						<td class="role-scope">
 							<ul>
-								<li><rref>group</rref></li>
 								<li><rref>tree</rref></li>
+								<li><rref>group</rref> <abbr title="contained by" class="symbol">←</abbr> <rref>treeitem</rref></li>
 							</ul>
 						</td>
 					</tr>