diff --git a/doc/13_relational_operators.qbk b/doc/13_relational_operators.qbk
index 2797c27..a16d53b 100644
--- a/doc/13_relational_operators.qbk
+++ b/doc/13_relational_operators.qbk
@@ -29,6 +29,8 @@ This mixed comparison has a practical interpretation, which is occasionally usef
         
 In the above example, the meaning of the comparison is 'user chose number 2'. If user chose nothing, he didn't choose number 2.
 
+In case where `optional<T>` is compared to `none`, it is not required that `T` be __SGI_EQUALITY_COMPARABLE__.
+
 In a similar manner, type `optional<T>` is __SGI_LESS_THAN_COMPARABLE__ whenever `T` is __SGI_LESS_THAN_COMPARABLE__. The optional object containing no value is compared less than any value of `T`. To illustrate this, if the default ordering of `size_t` is {`0`, `1`, `2`, ...}, the default ordering of `optional<size_t>` is {`boost::none`, `0`, `1`, `2`, ...}. This order does not have a practical interpretation. The goal is to have any semantically correct default ordering in order for `optional<T>` to be usable in ordered associative containers (wherever `T` is usable).  
 
 Mixed relational operators are the only case where the contained value of an optional object can be inspected without the usage of value accessing function (`operator*`, `value`, `value_or`).
diff --git a/doc/html/boost_optional/tutorial/relational_operators.html b/doc/html/boost_optional/tutorial/relational_operators.html
index be20e45..ecb8c4f 100644
--- a/doc/html/boost_optional/tutorial/relational_operators.html
+++ b/doc/html/boost_optional/tutorial/relational_operators.html
@@ -71,6 +71,11 @@
         In the above example, the meaning of the comparison is 'user chose number
         2'. If user chose nothing, he didn't choose number 2.
       </p>
+<p>
+        In case where <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> is
+        compared to <code class="computeroutput"><span class="identifier">none</span></code>, it is not
+        required that <code class="computeroutput"><span class="identifier">T</span></code> be <a href="http://www.sgi.com/tech/stl/EqualityComparable.html" target="_top"><code class="computeroutput"><span class="identifier">EqualityComparable</span></code></a>.
+      </p>
 <p>
         In a similar manner, type <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code>
         is <a href="http://www.sgi.com/tech/stl/LessThanComparable.html" target="_top"><code class="computeroutput"><span class="identifier">LessThanComparable</span></code></a> whenever <code class="computeroutput"><span class="identifier">T</span></code> is <a href="http://www.sgi.com/tech/stl/LessThanComparable.html" target="_top"><code class="computeroutput"><span class="identifier">LessThanComparable</span></code></a>. The optional
diff --git a/doc/html/index.html b/doc/html/index.html
index 51418c3..af4424e 100644
--- a/doc/html/index.html
+++ b/doc/html/index.html
@@ -133,7 +133,7 @@
 </div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: June 08, 2014 at 14:17:56 GMT</small></p></td>
+<td align="left"><p><small>Last revised: June 08, 2014 at 18:14:37 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>