diff --git a/reference/parallel/parallel.channel.xml b/reference/parallel/parallel.channel.xml
index 591d5566eb..148a0d35df 100644
--- a/reference/parallel/parallel.channel.xml
+++ b/reference/parallel/parallel.channel.xml
@@ -44,13 +44,19 @@
 <!-- }}} -->
 
     <classsynopsisinfo role="comment">Access</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-channel')/db:refentry/db:refsect1[@audience='access']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-channel')/db:refentry/db:refsect1[@audience='access']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+
     <classsynopsisinfo role="comment">Sharing</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-channel')/db:refentry/db:refsect1[@audience='sharing']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-channel')/db:refentry/db:refsect1[@audience='sharing']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+
     <classsynopsisinfo role="comment">Closing</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-channel')/db:refentry/db:refsect1[@audience='close']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-channel')/db:refentry/db:refsect1[@audience='close']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
 
     <classsynopsisinfo role="comment">Constant for Infinitely Buffered</classsynopsisinfo>
     <fieldsynopsis>
diff --git a/reference/parallel/parallel.events.input.xml b/reference/parallel/parallel.events.input.xml
index 7060e6c191..bd5acb9208 100644
--- a/reference/parallel/parallel.events.input.xml
+++ b/reference/parallel/parallel.events.input.xml
@@ -24,9 +24,15 @@
     </classsynopsisinfo>
 <!-- }}} -->
 
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events-input')/db:refentry/db:refsect1[@audience='adding']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events-input')/db:refentry/db:refsect1[@audience='removing']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events-input')/db:refentry/db:refsect1[@audience='clearing']/descendant::db:methodsynopsis[not(@role='procedural')])" />   
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events-input')/db:refentry/db:refsect1[@audience='adding']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events-input')/db:refentry/db:refsect1[@audience='removing']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events-input')/db:refentry/db:refsect1[@audience='clearing']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
 
    </classsynopsis>
 <!-- }}} -->
diff --git a/reference/parallel/parallel.events.xml b/reference/parallel/parallel.events.xml
index d738dc283d..a04502362e 100644
--- a/reference/parallel/parallel.events.xml
+++ b/reference/parallel/parallel.events.xml
@@ -36,16 +36,24 @@
 <!-- }}} -->
    
     <classsynopsisinfo role="comment">Input</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='input']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='input']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+
     <classsynopsisinfo role="comment">Targets</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='targets']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='targets']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
 
     <classsynopsisinfo role="comment">Behaviour</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='behaviour']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='behaviour']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
 
     <classsynopsisinfo role="comment">Polling</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='polling']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-events')/db:refentry/db:refsect1[@audience='polling']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
    </classsynopsis>
 <!-- }}} -->
 
diff --git a/reference/parallel/parallel.future.xml b/reference/parallel/parallel.future.xml
index c2f6f66278..652338e65f 100644
--- a/reference/parallel/parallel.future.xml
+++ b/reference/parallel/parallel.future.xml
@@ -25,13 +25,19 @@
 <!-- }}} -->
    
     <classsynopsisinfo role="comment">Resolution</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-future')/db:refentry/db:refsect1[@audience='resolution']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-future')/db:refentry/db:refsect1[@audience='resolution']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+
     <classsynopsisinfo role="comment">State</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-future')/db:refentry/db:refsect1[@audience='state']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-future')/db:refentry/db:refsect1[@audience='state']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
 
     <classsynopsisinfo role="comment">Cancellation</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-future')/db:refentry/db:refsect1[@audience='cancellation']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-future')/db:refentry/db:refsect1[@audience='cancellation']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
 
    </classsynopsis>
 <!-- }}} -->
diff --git a/reference/parallel/parallel.runtime.xml b/reference/parallel/parallel.runtime.xml
index eef56b5b7e..7ca8afc26f 100644
--- a/reference/parallel/parallel.runtime.xml
+++ b/reference/parallel/parallel.runtime.xml
@@ -25,13 +25,19 @@
 <!-- }}} -->
 
     <classsynopsisinfo role="comment">Create</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-runtime')/db:refentry/db:refsect1[@audience='create']/descendant::db:constructorsynopsis[not(@role='procedural')])" /> 
-    
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-runtime')/db:refentry/db:refsect1[@audience='create']/descendant::db:constructorsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+
     <classsynopsisinfo role="comment">Execute</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-runtime')/db:refentry/db:refsect1[@audience='execute']/descendant::db:methodsynopsis[not(@role='procedural')])" />
-    
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-runtime')/db:refentry/db:refsect1[@audience='execute']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
+
     <classsynopsisinfo role="comment">Join</classsynopsisinfo>
-    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-runtime')/db:refentry/db:refsect1[@audience='join']/descendant::db:methodsynopsis[not(@role='procedural')])" />
+    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.parallel-runtime')/db:refentry/db:refsect1[@audience='join']/descendant::db:methodsynopsis[not(@role='procedural')])">
+     <xi:fallback />
+    </xi:include>
    </classsynopsis>
 <!-- }}} -->