Coding Bat reference

Doc/Sd1/preliminaries.xml

@@ -58,8 +58,8 @@
       </glossentry>
 
       <glossentry xml:id="glossMiGitRef">
-        <glossterm>MI <xref linkend="glo_Soft_Git"/> / <xref linkend="glo_Svn"/>
-        repository</glossterm>
+        <glossterm>MI <xref linkend="glo_Soft_Git"/> / <xref
+        linkend="glo_Svn"/> repository</glossterm>
 
         <glossdef>
           <para><link
@@ -159,6 +159,15 @@
         </glossdef>
       </glossentry>
 
+      <glossentry>
+        <glossterm>Supplementary exercises</glossterm>
+
+        <glossdef>
+          <para><link
+          xlink:href="http://codingbat.com">http://codingbat.com</link></para>
+        </glossdef>
+      </glossentry>
+
       <glossentry xml:id="glossSda1LiveLectureAdditions">
         <glossterm>Live lecture additions</glossterm>