diff --git a/Doc/Sd1/appendix.xml b/Doc/Sd1/appendix.xml
index 4df9e152736fa65e618dbe1c9a9da8b8dcda3fee..9cd98d225b24a6c6cf09d506e15613249920c72b 100644
--- a/Doc/Sd1/appendix.xml
+++ b/Doc/Sd1/appendix.xml
@@ -243,7 +243,7 @@
                       <guimenuitem>Properties</guimenuitem> --&gt;
                       <guimenuitem>Java Compiler</guimenuitem> --&gt;
                       <guimenuitem>Javadoc</guimenuitem> if ticking
-                      <quote>Project specific settings</quote>. </para>
+                      <quote>Project specific settings</quote>.</para>
                     </listitem>
 
                     <listitem>
@@ -309,10 +309,53 @@
       </orderedlist>
     </section>
 
+    <section xml:id="sd1SectProjectGrep">
+      <title>Poor man's <xref linkend="glo_UNIX"/> <command
+      xlink:href="http://linux.die.net/man/1/grep">grep</command>.</title>
+
+      <para>The <xref linkend="glo_UNIX"/> operating system provides the
+      <command xlink:href="http://linux.die.net/man/1/grep">grep</command>
+      command which allows for retrieving occurrences of given strings in text
+      files. We consider an example text file <filename>input.txt</filename>
+      containing four lines:</para>
+
+      <programlisting language="none" linenumbering="unnumbered">Roses are nice flowers.
+Red wine is tasty
+The red cross acts worldwide
+Mayflower used to be a ship.</programlisting>
+
+      <para>We search this file <filename>input.txt</filename> for the
+      occurrence of the string <quote>flower</quote> being contained in lines
+      1 and 4:</para>
+
+      <programlisting language="none">&gt;grep <emphasis role="bold">flower</emphasis> input.txt 
+Roses are nice <emphasis role="bold">flower</emphasis>s.
+May<emphasis role="bold">flower</emphasis> used to be a ship.</programlisting>
+
+      <para>Thus the <command
+      xlink:href="http://linux.die.net/man/1/grep">grep</command> command
+      echoes all lines containing the search string in question to standard
+      output. Adding the command line option <option>-i</option> allows for
+      case insensitive searches:</para>
+
+      <programlisting language="none" linenumbering="unnumbered">&gt;grep <option>-i</option> <emphasis
+          role="bold">red</emphasis> input.txt 
+<emphasis role="bold">Red</emphasis> wine is tasty
+The <emphasis role="bold">red</emphasis> cross acts worldwide</programlisting>
+
+      <para>This time all possible variants like <quote>Red</quote>,
+      <quote>red</quote>, <quote>RED</quote> and so on will match. </para>
+
+      <para><command
+      xlink:href="http://linux.die.net/man/1/grep">grep</command> also allows
+      for searching multiple files. Consider another text file
+      second.txt:</para>
+    </section>
+
     <section xml:id="sd1ProjectSieveErathostenes">
       <title>Project <link
       xlink:href="https://en.wikipedia.org/wiki/Sieve_of_Eratosthenes#Euler.27s_Sieve">Euler's
-      sieve</link></title>
+      sieve</link> (Winter 2015)</title>
 
       <para>The project's goal is about:</para>