title: CGAL namespacing issues in the tutorial
body: <p>I am trying to make CGAL working in Visual Studio (VS) 2017 64bit on Windows 10. I have followed the installation and compilation steps outlined at <a href="https://www.cgal.org/download/windows.html" rel="nofollow noreferrer">Download CGAL for Windows</a>. I am able to compile examples into .exe files with CMake and execute them, no troubles.</p>
  
  <p>However, now I would like to create an own project in VS and use the CGAL libraries. The workflow:</p>
  
  <ol>
  <li>Open the solution file named <code>CGAL.sln</code> in VS.</li>
  <li>Create a new project and choose to add it to the solution.</li>
  <li>In this new project properties window, go to Configuration Properties > C/C++ > General and add the path <code>C:\dev\CGAL-4.11\include</code> in the Additional Include Directories option.</li>
  <li>Enter the code in the created <code>mysample.cpp</code> file (copied from the <a href="https://doc.cgal.org/latest/Manual/tutorial_hello_world.html#intro_Three" rel="nofollow noreferrer">official tutorial</a>):</li>
  </ol>
  
  <p>Code:</p>
  
  <pre><code>#include &lt;iostream&gt;
  #include &lt;CGAL\Simple_cartesian.h&gt;
  
  typedef CGAL::Simple_cartesian&lt;double&gt; Kernel;
  typedef Kernel::Point_2 Point_2;
  typedef Kernel::Segment_2 Segment_2;
  </code></pre>
  
  <p>The <code>include</code> statements are fine (I am able to pull all the header files), but the <code>typedef CGAL::Simple_cartesian&lt;double&gt; Kernel;</code> line shows the following error:</p>
  
  <blockquote>
    <p>E0283 qualified name is not allowed</p>
  </blockquote>
  
  <p>It seems as this is a namespace issues as in the CGAL tutorial code all the names are scoped in the namespace <code>CGAL</code> which is in global scope.</p>
  
  <p>How do I make the tutorial code working in my environment?</p>