diff --git a/mps/manual/wiki/index.html b/mps/manual/wiki/index.html
index b3d4aa0e2e3..83c3bf1f6db 100644
--- a/mps/manual/wiki/index.html
+++ b/mps/manual/wiki/index.html
@@ -53,9 +53,8 @@
 
 <h2><a id="section-2" name="section-2">2. Articles</a></h2>
 
-<p>Recommended:</p>
+<p>Recommended; some relevance to client developers:</p>
 <ul>
-
   <li><a href="glossary.html">glossary of MPS terminology</a></li>
 
   <li><a href="refman_add.html">Reference Manual Addenda (corrections and additions)</a></li>
@@ -74,21 +73,23 @@
 </ul>
 
 
-<p>Sketchy:</p>
-
-
-<p>Internal or arcane:</p>
+<p>MPS Internals:</p>
 <ul>
-
   <li><a href="timeline.html">rough timeline of MPS development</a></li>
 
   <li><a href="gc_story.html">the story of a garbage collection</a></li>
 
+  <li><a href="trace.html">how a trace (collection, etc) works</a></li>
+
   <li><a href="apinternals.html">discussion of Allocation Point internals</a></li>
 
-  <li><a href="unmanaged.html">issues with unmanaged workspace</a></li>
+</ul>
 
-  <li><a href="trace.html">how a trace (collection, etc) works</a></li>
+
+
+<p>Sketchy, very incomplete, or arcane:</p>
+<ul>
+  <li><a href="unmanaged.html">issues with unmanaged workspace</a></li>
 
   <li><a href="poolamc.html">guide to poolamc.c</a></li>
 
@@ -168,6 +169,7 @@
   2007-01-12  RHSK  Article: Trace
   2007-01-18  RHSK  Article: PoolAMC
   2007-03-01  RHSK  Article: Theorem
+  2007-04-26  RHSK  New categories on this index page.
 </pre>
 
 <h2><a id="section-C" name="section-C">C. Copyright and License</a></h2>