nverted to .NET objects by the function <a href="#box"><code>BOX</code></a>.  On the other hand, if
a RDNZL function returns a .NET object, it will be automatically
translated to a Lisp object by <a href="#unbox"><code>UNBOX</code></a> if possible.  If a RDNZL function
call doesn't return a result (i.e. if its return type is <code>System.Void</code>),
then the keyword <code>:VOID</code> is returned. If a <code>NULL</code> object is returned,
RDNZL returns <code>NIL</code> and <code>T</code> as a second retu