by-reference argument in
another .NET call.)   Note that while this is kind of tedious it
corresponds to the C# semantics.
<p>
Here's an example: If you have a .NET class defined like this (in C#)
<pre>
public class Class1 {
  public static void foo (ref int a) {
    a++;
  }
}
</pre>
then you can do this (see <a href="#reader">below</a> for the reader syntax) in Lisp
<pre>
RDNZL-USER(16): (let ((a (<a class=noborder href="#box">box</a> 41)))
                  [Class1.foo (<a class=noborder href="#ref">ref<