diff --git a/index.html b/index.html
index 894f4da..de28c5c 100644
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+++ b/index.html
@@ -60,22 +60,23 @@ <h2>Missing C++ standard library CXX headers (e.g &lt;cstdio&gt;)
 
     <p>Contributed by Ralf W. Grosse-Kunstleve.</p>
 
-    <h2>Missing C++ standard library &lt;limits&gt; header workaround
+    <h2>C++ standard library &lt;limits&gt; header workaround
     <a href="../../boost/limits.hpp">boost/limits.hpp</a></h2>
 
     <p>Several Boost libraries require the standard library's &lt;limits&gt;
-    header, yet this header is not always supplied by non-conforming
-    compilers and libraries.&nbsp; Header <a href=
-    "../../boost/limits.hpp">boost/limits.hpp</a> simply includes the
-    standard library &lt;limits&gt; header if available, otherwise includes
-    <a href=
-    "../../boost/detail/limits.hpp">boost/detail/limits.hpp</a>.&nbsp;
-    BOOST_NO_LIMITS from <a href="../config/config.htm">boost/config.hpp</a>
-    is used to determine &lt;limits&gt; availability.</p>
+    header, yet this header doesn't always include all the appropriate
+    specializations of <code>std::numeric_limits</code>. Header <a href=
+    "../../boost/limits.hpp">boost/limits.hpp</a> includes the
+    standard library &lt;limits&gt; header, with some missing specialisations.
 
     <p>Note also the test program <a href=
     "../config/test/limits_test.cpp">limits_test.cpp</a></p>
 
+    <p>This header used to include a full fallback implementation for libraries
+    which didn't have the standard &lt;limits&gt; header, but was removed
+    because such libraries are obsolete, and there were licensing problems
+    with the fallback implementation.</p>
+
     <p>Contributed by Jens Maurer.</p>
 
     <p>&nbsp;<br clear="all"></p>