diff --git a/doc/html/boost_typetraits/reference/is_union.html b/doc/html/boost_typetraits/reference/is_union.html
index f255b36..f8b2d8e 100644
--- a/doc/html/boost_typetraits/reference/is_union.html
+++ b/doc/html/boost_typetraits/reference/is_union.html
@@ -62,20 +62,24 @@
 <p>
         <span class="bold"><strong>Examples:</strong></span>
       </p>
+<p>
+        Given <code class="computeroutput"><span class="keyword">union</span> <span class="identifier">my_union</span>
+        <span class="special">{};</span></code> then:
+      </p>
 <div class="blockquote"><blockquote class="blockquote"><p>
-          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="keyword">void</span><span class="special">&gt;</span></code>
+          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="identifier">my_union</span><span class="special">&gt;</span></code>
           inherits from <code class="computeroutput"><a class="link" href="integral_constant.html" title="integral_constant">true_type</a></code>.
         </p></blockquote></div>
 <div class="blockquote"><blockquote class="blockquote"><p>
-          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="keyword">const</span> <span class="keyword">void</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
+          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="keyword">const</span> <span class="identifier">my_union</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
           is the type <code class="computeroutput"><a class="link" href="integral_constant.html" title="integral_constant">true_type</a></code>.
         </p></blockquote></div>
 <div class="blockquote"><blockquote class="blockquote"><p>
-          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="keyword">void</span><span class="special">&gt;::</span><span class="identifier">value</span></code> is an integral constant expression
+          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="identifier">my_union</span><span class="special">&gt;::</span><span class="identifier">value</span></code> is an integral constant expression
           that evaluates to <span class="emphasis"><em>true</em></span>.
         </p></blockquote></div>
 <div class="blockquote"><blockquote class="blockquote"><p>
-          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="keyword">void</span><span class="special">*&gt;::</span><span class="identifier">value</span></code> is an integral constant expression
+          <code class="computeroutput"><span class="identifier">is_union</span><span class="special">&lt;</span><span class="identifier">my_union</span><span class="special">*&gt;::</span><span class="identifier">value</span></code> is an integral constant expression
           that evaluates to <span class="emphasis"><em>false</em></span>.
         </p></blockquote></div>
 <div class="blockquote"><blockquote class="blockquote"><p>
diff --git a/doc/html/index.html b/doc/html/index.html
index 4668253..b66fff8 100644
--- a/doc/html/index.html
+++ b/doc/html/index.html
@@ -30,7 +30,7 @@
       Marcus, Itay Maman, John Maddock, Alexander Nasonov, Thorsten Ottosen, Robert
       Ramey and Jeremy Siek</p></div>
 <div><div class="legalnotice">
-<a name="id893499"></a><p>
+<a name="id880058"></a><p>
         Distributed under the Boost Software License, Version 1.0. (See accompanying
         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
       </p>
diff --git a/doc/html/index/s11.html b/doc/html/index/s11.html
index e8737a2..ecde8ba 100644
--- a/doc/html/index/s11.html
+++ b/doc/html/index/s11.html
@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id967562"></a>Class Index</h2></div></div></div>
+<a name="id952889"></a>Class Index</h2></div></div></div>
 <p><a class="link" href="s11.html#idx_id_0">A</a> <a class="link" href="s11.html#idx_id_2">C</a> <a class="link" href="s11.html#idx_id_3">D</a> <a class="link" href="s11.html#idx_id_4">E</a> <a class="link" href="s11.html#idx_id_5">F</a> <a class="link" href="s11.html#idx_id_6">H</a> <a class="link" href="s11.html#idx_id_7">I</a> <a class="link" href="s11.html#idx_id_8">M</a> <a class="link" href="s11.html#idx_id_9">P</a> <a class="link" href="s11.html#idx_id_10">R</a> <a class="link" href="s11.html#idx_id_11">T</a></p>
 <div class="variablelist"><dl>
 <dt>
diff --git a/doc/html/index/s12.html b/doc/html/index/s12.html
index 72b079c..70a434f 100644
--- a/doc/html/index/s12.html
+++ b/doc/html/index/s12.html
@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id968602"></a>Typedef Index</h2></div></div></div>
+<a name="id953930"></a>Typedef Index</h2></div></div></div>
 <p><a class="link" href="s12.html#idx_id_18">F</a> <a class="link" href="s12.html#idx_id_23">R</a> <a class="link" href="s12.html#idx_id_24">T</a></p>
 <div class="variablelist"><dl>
 <dt>
diff --git a/doc/html/index/s13.html b/doc/html/index/s13.html
index 15de3c1..8b867cd 100644
--- a/doc/html/index/s13.html
+++ b/doc/html/index/s13.html
@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id968712"></a>Macro Index</h2></div></div></div>
+<a name="id954040"></a>Macro Index</h2></div></div></div>
 <p><a class="link" href="s13.html#idx_id_27">B</a></p>
 <div class="variablelist"><dl>
 <dt>
diff --git a/doc/html/index/s14.html b/doc/html/index/s14.html
index 22200c3..ac4bd3b 100644
--- a/doc/html/index/s14.html
+++ b/doc/html/index/s14.html
@@ -23,7 +23,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id969254"></a>Index</h2></div></div></div>
+<a name="id954581"></a>Index</h2></div></div></div>
 <p><a class="link" href="s14.html#idx_id_39">A</a> <a class="link" href="s14.html#idx_id_40">B</a> <a class="link" href="s14.html#idx_id_41">C</a> <a class="link" href="s14.html#idx_id_42">D</a> <a class="link" href="s14.html#idx_id_43">E</a> <a class="link" href="s14.html#idx_id_44">F</a> <a class="link" href="s14.html#idx_id_45">H</a> <a class="link" href="s14.html#idx_id_46">I</a> <a class="link" href="s14.html#idx_id_47">M</a> <a class="link" href="s14.html#idx_id_48">P</a> <a class="link" href="s14.html#idx_id_49">R</a> <a class="link" href="s14.html#idx_id_50">T</a> <a class="link" href="s14.html#idx_id_51">U</a></p>
 <div class="variablelist"><dl>
 <dt>
diff --git a/doc/is_union.qbk b/doc/is_union.qbk
index 9d8cd8f..e8203b7 100644
--- a/doc/is_union.qbk
+++ b/doc/is_union.qbk
@@ -30,14 +30,16 @@ __header ` #include <boost/type_traits/is_union.hpp>` or ` #include <boost/type_
 
 __examples
 
-[:`is_union<void>` inherits from `__true_type`.]
+Given `union my_union {};` then:
 
-[:`is_union<const void>::type` is the type `__true_type`.]
+[:`is_union<my_union>` inherits from `__true_type`.]
 
-[:`is_union<void>::value` is an integral constant 
+[:`is_union<const my_union>::type` is the type `__true_type`.]
+
+[:`is_union<my_union>::value` is an integral constant 
 expression that evaluates to /true/.]
 
-[:`is_union<void*>::value` is an integral constant 
+[:`is_union<my_union*>::value` is an integral constant 
 expression that evaluates to /false/.]
 
 [:`is_union<T>::value_type` is the type `bool`.]