Improve the documentation.

doc/doxygen_layout.xml

@@ -1,25 +1,36 @@
 <doxygenlayout version="1.0">
-  <!-- Generated by doxygen 1.8.14 -->
   <!-- Navigation index tabs for HTML output -->
   <navindex>
-    <tab type="mainpage" visible="yes" title=""/>
+    <tab type="mainpage" visible="yes" title="Tutorial"/>
+    <tab type="examples" visible="yes" title="" intro=""/>  
+    <tab type="filelist" visible="yes" title=""/>
+
     <tab type="pages" visible="yes" title="" intro=""/>
-    <tab type="modules" visible="yes" title="C modules" intro=""/>
+    <tab type="modules" visible="yes" title="" intro=""/>
     <tab type="namespaces" visible="yes" title="">
       <tab type="namespacelist" visible="yes" title="" intro=""/>
       <tab type="namespacemembers" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="classes" visible="yes" title="">
+    <tab type="interfaces" visible="no" title="">
+      <tab type="interfacelist" visible="yes" title="" intro=""/>
+      <tab type="interfaceindex" visible="$ALPHABETICAL_INDEX" title=""/> 
+      <tab type="interfacehierarchy" visible="yes" title="" intro=""/>
+    </tab>
+    <tab type="classes" visible="no" title="">
       <tab type="classlist" visible="yes" title="" intro=""/>
       <tab type="classindex" visible="$ALPHABETICAL_INDEX" title=""/> 
       <tab type="hierarchy" visible="yes" title="" intro=""/>
       <tab type="classmembers" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="files" visible="yes" title="">
-      <tab type="filelist" visible="yes" title="" intro=""/>
-      <tab type="globals" visible="yes" title="" intro=""/>
+    <tab type="structs" visible="no" title="">
+      <tab type="structlist" visible="yes" title="" intro=""/>
+      <tab type="structindex" visible="$ALPHABETICAL_INDEX" title=""/> 
+    </tab>
+    <tab type="exceptions" visible="no" title="">
+      <tab type="exceptionlist" visible="yes" title="" intro=""/>
+      <tab type="exceptionindex" visible="$ALPHABETICAL_INDEX" title=""/> 
+      <tab type="exceptionhierarchy" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="examples" visible="yes" title="" intro=""/>  
   </navindex>
 
   <!-- Layout definition for a class page -->
@@ -87,8 +98,13 @@
     <memberdecl>
       <nestednamespaces visible="yes" title=""/>
       <constantgroups visible="yes" title=""/>
+      <interfaces visible="yes" title=""/>
       <classes visible="yes" title=""/>
+      <structs visible="yes" title=""/>
+      <exceptions visible="yes" title=""/>
       <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
@@ -98,6 +114,8 @@
     <memberdef>
       <inlineclasses title=""/>
       <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
@@ -113,11 +131,16 @@
     <includedbygraph visible="$INCLUDED_BY_GRAPH"/>
     <sourcelink visible="yes"/>
     <memberdecl>
+      <interfaces visible="yes" title=""/>
       <classes visible="yes" title=""/>
+      <structs visible="yes" title=""/>
+      <exceptions visible="yes" title=""/>
       <namespaces visible="yes" title=""/>
       <constantgroups visible="yes" title=""/>
       <defines title=""/>
-      <typedes title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
@@ -128,6 +151,8 @@
       <inlineclasses title=""/>
       <defines title=""/>
       <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
@@ -137,8 +162,7 @@
 
   <!-- Layout definition for a group page -->
   <group>
-    <briefdescription visible="no"/>
-    <detaileddescription title="Description"/>
+    <briefdescription visible="yes"/>
     <groupgraph visible="$GROUP_GRAPHS"/>
     <memberdecl>
       <nestedgroups visible="yes" title=""/>
@@ -148,6 +172,8 @@
       <classes visible="yes" title=""/>
       <defines title=""/>
       <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
       <enums title=""/>
       <enumvalues title=""/>
       <functions title=""/>
@@ -161,11 +187,14 @@
       <friends title=""/>
       <membergroups visible="yes"/>
     </memberdecl>
+    <detaileddescription title=""/>
     <memberdef>
       <pagedocs/>
       <inlineclasses title=""/>
       <defines title=""/>
       <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
       <enums title=""/>
       <enumvalues title=""/>
       <functions title=""/>