What is meaing of "A struct cannot have an initializer in the form: base (argument-list)."
<p>Based on <a href="http://msdn.microsoft.com/en-us/library/aa288208%28v=vs.71%29.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/aa288208%28v=vs.71%29.aspx</a></p>

<p>Struct constructors are similar to class constructors, except for the following differences:</p>

<ol>
<li><p>Structs cannot contain explicit
parameterless constructors. Struct
members are automatically
initialized to their default values.</p></li>
<li><p>A struct cannot have an initializer
    in the form: base (argument-list).</p></li>
</ol>

<p>I have problems to understand Item 2. Can someone give me a concrete example?</p>
