diff --git a/doc/mkvmerge-gui.html b/doc/mkvmerge-gui.html
index bd3125e3f..82ed0edf6 100644
--- a/doc/mkvmerge-gui.html
+++ b/doc/mkvmerge-gui.html
@@ -163,11 +163,8 @@
   <p>If you need any more info please head over to
     <a href="http://www.matroska.org/">Matroska's homepage</a>.</p>
 
-  <h3>
-    <a name="whatismkvmerge">What is mkvmerge? What is mkvmerge
-      GUI?
-    </a>
-  </h3>
+  <h3><a name="whatismkvmerge">1.2. What is mkvmerge? What is mkvmerge
+      GUI?</a></h3>
 
   <p><i>mkvmerge</i> and <i>mkvmerge GUI</i> (or just <i>mmg</i>) are
     two programs created by <a href="mailto:moritz@bunkus.org">Moritz
@@ -183,7 +180,7 @@
     other Unix derivatives. The program is licensed under the GPL, so
     the source code is available to anyone interested.</p>
 
-  <h3><a name="latestversion">1.2. Obtaining the latest version</a></h3>
+  <h3><a name="latestversion">1.3. Obtaining the latest version</a></h3>
 
   <p>You can always find the latest version of <i>mkvtoolnix</i> on
     <a href="http://www.bunkus.org/videotools/mkvtoolnix/">Moritz
@@ -192,7 +189,7 @@
     will probably download the sources and compile
     <i>mkvtoolnix</i> themselves.</p>
 
-  <h3><a name="scope">1.3. Scope of this guide</a></h3>
+  <h3><a name="scope">1.4. Scope of this guide</a></h3>
 
   <p>This guide only focusses on the GUI part of these tools. All
     command line options are explained in detail in <a
@@ -210,10 +207,10 @@
   <table width="100%" border="0">
     <tr>
       <td valign="top">
-        <p>The only thing that <i>mmg</i> needs to know is the location of the
-          <i>mkvmerge</i> binary. Under normal circumstances it will be
-          found automatically. But if not then you can select the binary
-          to use on the <i>Settings</i> tab.</p>
+        <p>The only thing that <i>mmg</i> needs to know is the location
+          of the <i>mkvmerge</i> binary. Under normal circumstances it
+          will be found automatically. But if not then you can select
+          the binary to use on the <i>Settings</i> tab.</p>
       </td>
       <td>&nbsp;</td>
       <td valign="top">
@@ -538,8 +535,8 @@
     </tr>
     <tr>
       <td valign="top">
-        <h4><a name="global_split">3.5.2. Automatic splitting and file linking
-        </a></h4>
+        <h4><a name="global_split">3.5.2. Automatic splitting and file
+            linking </a></h4>
 
         <p>The <code>Split</code> section handles how the output file is
           split into several smaller files. If no splitting is selected
@@ -801,16 +798,13 @@
     </code>
   </p>
 
-  <h3>
-    <a name="chapterformats">Chapter formats supported by
-      mkvmerge
-    </a>
-  </h3>
+  <h3><a name="chapterformats">4.3. Chapter formats supported by mkvmerge
+    </a></h3>
 
   <p><i>mkvmerge</i> and <i>mmg</i>'s chapter editor both support
     different formats for chapter files.</p>
 
-  <h4><a name="cfsimple">4.2.1. Simple/OGM style chapter files</a></h4>
+  <h4><a name="cfsimple">4.3.1. Simple/OGM style chapter files</a></h4>
 
   <p>One of the most basic formats is the format used in OGM files. It
     is a text based format. Each chapter entry contains of two lines,
@@ -838,7 +832,7 @@
   <p>Due to its limitations <i>mmg</i> cannot output chapters in this
     format.</p>
 
-  <h4><a name="cfxml">4.2.2. Full-featured XML style chapter files</a></h4>
+  <h4><a name="cfxml">4.3.2. Full-featured XML style chapter files</a></h4>
 
   <p>I've created a XML based chapter format that closely matches the
     system Matroska uses. With this format you have the full control
@@ -846,14 +840,14 @@
     detail. Please have a look at the example XML chapter files that
     came with <i>mkvtoolnix</i>.</p>
 
-  <h4><a name="cfkax">4.2.3. Chapters found in Matroska files</a></h4>
+  <h4><a name="cfkax">4.3.3. Chapters found in Matroska files</a></h4>
 
   <p>The chapter editor can read chapters directly from Matroska
     files. These can be written to XML chapter files or back to the same
     Matroska file or another Matroska file. All features are
     supported.</p>
 
-  <h3><a name="creatingchapters">4.3. Creating chapter files</a></h3>
+  <h3><a name="creatingchapters">4.4. Creating chapter files</a></h3>
 
   <table width="100%" border="0">
     <tr>
@@ -906,7 +900,7 @@
     </tr>
   </table>
 
-  <h3><a name="editingchapters">4.4. Editing existing chapters</a></h3>
+  <h3><a name="editingchapters">4.5. Editing existing chapters</a></h3>
 
   <p>You can load existing chapter files or chapters from Matroska files
     by selecting the <code>Load</code> option from the <code>Chapter