New Figure related exercise

Doc/Sd1/arrays.xml

@@ -9,6 +9,20 @@
          xmlns:db="http://docbook.org/ns/docbook">
   <title>Arrays</title>
 
+  <section xml:id="sd1SectConsoleSumCommandLine">
+    <title>Console summing revisited</title>
+
+    <qandaset>
+      <qandadiv>
+        <qandaentry>
+          <question>
+            <para>In exercise .</para>
+          </question>
+        </qandaentry>
+      </qandadiv>
+    </qandaset>
+  </section>
+
   <section xml:id="sd1SectNavigation">
     <title>Route navigation</title>
 

Doc/Sd1/inheritance.xml

@@ -9,8 +9,8 @@
          xmlns:db="http://docbook.org/ns/docbook">
   <title>Inheritance</title>
 
-  <section xml:id="sw1SectionInheritance">
-    <title/>
+  <section xml:id="sw1SectGeometryInherit">
+    <title>Geometry classes reconsidered</title>
 
     <para/>
   </section>