\twocolwidtha{6cm}
\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxObjectDataPtr<T>}{wxobjectdataptr}}{A shared pointer (using intrusive reference counting)}
+\twocolitem{\helpref{wxScopedPtr<T>}{wxscopedptrtemplate}}{A scoped pointer}
+\twocolitem{\helpref{wxSharedPtr<T>}{wxsharedptr}}{A shared pointer (using non-intrusive reference counting)}
\twocolitem{\helpref{wxWeakRef<T>}{wxweakref}}{A weak reference}
-\twocolitem{\helpref{wxObjectDataPtr<T>}{wxobjectdataptr}}{A shared pointer using intrusive reference counting}
\end{twocollist}
{\large {\bf Run-time class information system}}