+\subsection{wxUSE preprocessor symbols used only in wxMotif port}\label{wxusedefmotif}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{wxUSE\_GADGETS}{Use xmCascadeButtonGadgetClass, xmLabelGadgetClass, xmPushButtonGadgetClass and xmToggleButtonGadgetClass classes.}
+\twocolitem{wxUSE\_INVISIBLE\_RESIZE}{See src/motif/dialog.cpp file.}
+\end{twocollist}
+
+\subsection{wxUSE preprocessor symbols used only in Cocoa port}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{wxUSE\_OBJC\_UNIQUIFYING}{Enable Objective-C class name uniquifying.}
+\end{twocollist}
+
+\subsection{wxUSE preprocessor symbols used only in OS2 port}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{wxUSE\_CONSOLEDEBUG}{See src/os2/app.cpp file.}
+\twocolitem{wxUSE\_DDE}{See src/os2/mimetype.cpp file.}
+\twocolitem{wxUSE\_IMAGE\_LOADING\_IN\_MSW}{See src/os2/clipbrd.cpp file.}
+\twocolitem{wxUSE\_IMAGE\_LOADING\_IN\_OS2}{See src/os2/gdiimage.cpp file.}
+\twocolitem{wxUSE\_NET\_API}{Use NetBios32GetInfo API call.}
+\twocolitem{wxUSE\_RESOURCE\_LOADING\_IN\_OS2}{See src/os2/gdiimage.cpp file.}
+\end{twocollist}
+
+\subsection{wxUSE preprocessor symbols used only in wxMSW port}\label{wxusedefmsw}