title: How to create my own System namespace and objects?
body: <p>It is said here
  <a href="http://msdn.microsoft.com/en-us/library/fa13yay7%28v=VS.90%29.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/fa13yay7%28v=VS.90%29.aspx</a> (see also <a href="http://msdn.microsoft.com/en-us/library/s4wcexbc%28VS.90%29.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/s4wcexbc%28VS.90%29.aspx</a>)</p>
  
  <blockquote>
    <p>Use this option if you want to define
    or create your own System namespace
    and objects.</p>
  </blockquote>
  
  <p>But how ? Where can I find some examples ?</p>
  
  <p>Update: of course my question is not about how to create a namespace or a class but about an example of custom system architecture (an UML schema and source code).</p>
  
  <p>For example could this be used to port .NET on other processors like iphone ? Does Mono use this ?</p>
  
  <p>Is there some smallest possible example instead of whole commercial clr to learn from ?</p>