diff --git a/src/doc/user/usermanual.html b/src/doc/user/usermanual.html
index 5a0aa3ba..adcda502 100644
--- a/src/doc/user/usermanual.html
+++ b/src/doc/user/usermanual.html
@@ -20,8 +20,8 @@ alink="#0000FF">
     <div class="titlepage">
       <div>
         <div>
-          <h1 class="title"><a name="idp61482576" id=
-          "idp61482576"></a>Recoll user manual</h1>
+          <h1 class="title"><a name="idp41214976" id=
+          "idp41214976"></a>Recoll user manual</h1>
         </div>
 
         <div>
@@ -109,13 +109,13 @@ alink="#0000FF">
                 multiple indexes</a></span></dt>
 
                 <dt><span class="sect2">2.1.3. <a href=
-                "#idp67105136">Document types</a></span></dt>
+                "#idp46788704">Document types</a></span></dt>
 
                 <dt><span class="sect2">2.1.4. <a href=
-                "#idp67124816">Indexing failures</a></span></dt>
+                "#idp46808384">Indexing failures</a></span></dt>
 
                 <dt><span class="sect2">2.1.5. <a href=
-                "#idp67132272">Recovery</a></span></dt>
+                "#idp46815840">Recovery</a></span></dt>
               </dl>
             </dd>
 
@@ -150,8 +150,8 @@ alink="#0000FF">
                 diacritics sensitivity</a></span></dt>
 
                 <dt><span class="sect2">2.3.3. <a href=
-                "#RCL.INDEXING.CONFIG.THREADS">Indexing thread
-                usage configuration GUI</a></span></dt>
+                "#RCL.INDEXING.CONFIG.THREADS">Indexing threads
+                configuration</a></span></dt>
 
                 <dt><span class="sect2">2.3.4. <a href=
                 "#RCL.INDEXING.CONFIG.GUI">The index configuration
@@ -997,8 +997,8 @@ alink="#0000FF">
           <div class="titlepage">
             <div>
               <div>
-                <h3 class="title"><a name="idp67105136" id=
-                "idp67105136"></a>2.1.3.&nbsp;Document types</h3>
+                <h3 class="title"><a name="idp46788704" id=
+                "idp46788704"></a>2.1.3.&nbsp;Document types</h3>
               </div>
             </div>
           </div>
@@ -1091,8 +1091,8 @@ indexedmimetypes = application/pdf
           <div class="titlepage">
             <div>
               <div>
-                <h3 class="title"><a name="idp67124816" id=
-                "idp67124816"></a>2.1.4.&nbsp;Indexing
+                <h3 class="title"><a name="idp46808384" id=
+                "idp46808384"></a>2.1.4.&nbsp;Indexing
                 failures</h3>
               </div>
             </div>
@@ -1132,8 +1132,8 @@ indexedmimetypes = application/pdf
           <div class="titlepage">
             <div>
               <div>
-                <h3 class="title"><a name="idp67132272" id=
-                "idp67132272"></a>2.1.5.&nbsp;Recovery</h3>
+                <h3 class="title"><a name="idp46815840" id=
+                "idp46815840"></a>2.1.5.&nbsp;Recovery</h3>
               </div>
             </div>
           </div>
@@ -1528,7 +1528,7 @@ recoll -c ~/.indexes-email
                 <h3 class="title"><a name=
                 "RCL.INDEXING.CONFIG.THREADS" id=
                 "RCL.INDEXING.CONFIG.THREADS"></a>2.3.3.&nbsp;Indexing
-                thread usage configuration GUI</h3>
+                threads configuration</h3>
               </div>
             </div>
           </div>
@@ -1603,6 +1603,15 @@ recoll -c ~/.indexes-email
             </dl>
           </div>
 
+          <div class="note" style=
+          "margin-left: 0.5in; margin-right: 0.5in;">
+            <h3 class="title">Note</h3>
+
+            <p>If the first value in <code class=
+            "varname">thrQSizes</code> is 0, <code class=
+            "varname">thrTCounts</code> is ignored.</p>
+          </div>
+
           <p>The following example would use three queues (of depth
           2), and 4 threads for converting source documents, 2 for
           processing their text, and one to update the index. This
diff --git a/src/doc/user/usermanual.xml b/src/doc/user/usermanual.xml
index 8f69f6ba..4fb4ffd0 100644
--- a/src/doc/user/usermanual.xml
+++ b/src/doc/user/usermanual.xml
@@ -804,7 +804,7 @@ indexedmimetypes = application/pdf
 
 
       <sect2 id="RCL.INDEXING.CONFIG.THREADS">
-        <title>Indexing thread usage configuration GUI</title>
+        <title>Indexing threads configuration</title>
 
         <para>The &RCL; indexing process 
           <command>recollindex</command> can use multiple threads to
@@ -858,6 +858,9 @@ indexedmimetypes = application/pdf
 
          </variablelist>
 
+         <note><para>If the first value in <varname>thrQSizes</varname> is
+         0, <varname>thrTCounts</varname> is ignored.</para></note>
+         
          <para>The following example would use three queues (of depth 2),
          and 4 threads for converting source documents, 2 for
          processing their text, and one to update the index. This was