project's name corrected, defaultlabel, cosmetics

.project

 <?xml version="1.0" encoding="UTF-8"?>
 <projectDescription>
-	<name>Q</name>
+	<name>GoikLectures</name>
 	<comment></comment>
 	<projects>
 	</projects>

Doc/course.xml

@@ -2002,10 +2002,10 @@ public class Memo {
   customer NUMERIC(5) NOT NULL <emphasis role="bold">REFERENCES Customer</emphasis> <co
                       xml:id="invoiceSecondFK"/>...</programlisting>
-                  <remark>This actually is a deficiency of DTD's rather than
-                  XML. The XML schema standard does not only allow multiple
-                  foreign key definitions but polymorphic references as
-                  well.</remark>
+                  <remark>This is actually a deficiency of DTD's rather than
+                  of XML technologies in general: The XML schema standard
+                  allows for multiple foreign key definitions and polymorphic
+                  references as well.</remark>
                 </answer>
               </qandaentry>
             </qandadiv>
@@ -2512,7 +2512,8 @@ int count = 2;       // Fatal error: A variable must not be
                       <para>Both variants are disallowed: The indicator of
                       multiplicity <quote>*</quote> is mandatory and the only
-                      legal token to appear.</para>
+                      legal token to appear in a mixed content model's
+                      definition.</para>
                     </answer>
                   </qandaentry>
                 </qandadiv>
@@ -2524,25 +2525,27 @@ int count = 2;       // Fatal error: A variable must not be
               <para>We refer to our first version of our <link
               linkend="figure_memo_dtd">memo.dtd</link>. The <tag
-              class="element">memo</tag> type declaration reads:</para>
+              class="starttag">memo</tag> content model definition
+              reads:</para>
               <programlisting>&lt;!ELEMENT memo     (from, to+, subject, content)&gt;</programlisting>
-              <para>Basically this states that for valid document instances a
-              <tag class="starttag">memo</tag> node consists of a sequence of
-              other nodes. In this context we denote <tag
+              <para>This basically states that any valid <tag
+              class="starttag">memo</tag> document instance consists of a
+              sequence of other nodes. In this context we denote <tag
               class="starttag">memo</tag> as <emphasis>parent</emphasis> node.
               <tag class="element">from</tag>, <tag class="element">to</tag>,
               <tag class="element">subject</tag> and <tag
               class="element">content</tag> are called
               <emphasis>child</emphasis> nodes or
-              <emphasis>children</emphasis> for short.</para>
+              <emphasis>children</emphasis> of <tag
+              class="starttag">memo</tag> for short.</para>
               <para>A sequence of elements is a special case of a more general
-              definition of element content in the XML specification. We
-              already used the <quote>+</quote> operator to allow a node to
-              appear multiple times. Actually there are three such operators
-              being defined:</para>
+              element content definition in the XML specification. We already
+              used the <quote>+</quote> operator allowing a node to appear
+              multiple times. The DTD standard defines three such operators of
+              multiplicity:</para>
               <glosslist>
                 <glossentry>
@@ -2572,8 +2575,11 @@ int count = 2;       // Fatal error: A variable must not be
                 </glossentry>
               </glosslist>
-              <para>So far we only talked about sequences of element nodes. We
-              may also define mutually exclusive alternatives:</para>
+              <para>Consequently the absence of any such operator declares the
+              node to appear exactly once. So far we only talked about
+              sequences of element nodes. Bi virtue of
+              <quote><code>|</code></quote> we may also define mutually
+              exclusive alternatives:</para>
               <figure xml:id="operatorContentAlt">
                 <title>The operator <quote>|</quote> defining exclusive
@@ -2673,7 +2679,7 @@ int count = 2;       // Fatal error: A variable must not be
                 </production>
               </productionset>
-              <para>We give two examples:</para>
+              <para>We provide two examples:</para>
               <figure xml:id="pureElementContent">
                 <title>Examples of pure element content models</title>
@@ -7666,7 +7672,7 @@ public class ElementCount {
           redefine only those methods corresponding to events actually being
           handled by the application in question.</para>
-          <qandaset xml:id="sda1SaxReadAttributes">
+          <qandaset defaultlabel="qanda" xml:id="sda1SaxReadAttributes">
             <title>SAX and attribute values</title>
             <qandadiv>
@@ -11233,7 +11239,7 @@ public class InsertPerson extends JFrame {
           ugly mix of GUI components and database related code. We take a
           first step to decouple these two distinct concerns:</para>
-          <qandaset xml:id="quandaentry_DbLayer">
+          <qandaset defaultlabel="qanda" xml:id="quandaentry_DbLayer">
             <title>Handling the database layer</title>
             <qandadiv>
@@ -13021,7 +13027,7 @@ INSERT INTO Friends VALUES (1, <emphasis role="bold">'31'</emphasis>, '1991-10-1
             </qandadiv>
           </qandaset>
-          <qandaset xml:id="exerciseHashTraining">
+          <qandaset defaultlabel="qanda" xml:id="exerciseHashTraining">
             <title>Passwords and hash values</title>
             <qandadiv>
@@ -13139,7 +13145,8 @@ public class TestHashProvider {
             </qandadiv>
           </qandaset>
-          <qandaset xml:id="exerciseInsertLoginCredentials">
+          <qandaset defaultlabel="qanda"
+                    xml:id="exerciseInsertLoginCredentials">
             <title>Gui authentication: The real McCoy</title>
             <qandadiv>