+\begin{verbatim}
+<object class="spacer" name="area">
+ <size>400, 300</size>
+</object>
+\end{verbatim}
+
+The code can then access the sizer item by using {\tt XRCSIZERITEM} and
+{\tt XRCID} together.
+
+\begin{verbatim}
+wxSizerItem* item = XRCSIZERITEM(*this, "area");
+\end{verbatim}