\section{Preprocesser symbols defined by wxWidgets}\label{cppconst}
-Here is the list of preprocessor symbols used in the wxWidgets source grouped
+These are preprocessor symbols used in the wxWidgets source, grouped
by category (and sorted by alphabetical order inside each category). All of
-these macros except for \texttt{wxUSE\_XXX} variety is defined if the
+these macros except for the \texttt{wxUSE\_XXX} variety is defined if the
corresponding condition is true and undefined if it isn't, so they should be
-always tested usin \texttt{#ifdef} and not \texttt{#if}.
-
+always tested using \texttt{#ifdef} and not \texttt{#if}.
\subsection{GUI system}\label{guisystemconst}
\twocolitem{\_\_WXMSW\_\_}{Any Windows}
\twocolitem{\_\_WXOS2\_\_}{Identical to \_\_WXPM\_\_}
\twocolitem{\_\_WXOSX\_\_}{Any Mac OS X port (either Carbon or Cocoa)}
+\twocolitem{\_\_WXPALMOS\_\_}{PalmOS}
\twocolitem{\_\_WXPM\_\_}{OS/2 native Presentation Manager}
\twocolitem{\_\_WXSTUBS\_\_}{Stubbed version ('template' wxWin implementation)}
\twocolitem{\_\_WXXT\_\_}{Xt; mutually exclusive with WX\_MOTIF, not
\twocolitem{\_\_LINUX\_\_}{Linux}
\twocolitem{\_\_MACH\_\_}{Mach-O Architecture (Mac OS X only builds)}
\twocolitem{\_\_OSF\_\_}{OSF/1}
+\twocolitem{\_\_PALMOS\_\_}{PalmOS}
\twocolitem{\_\_SGI\_\_}{IRIX}
\twocolitem{\_\_SOLARIS\_\_}{Solaris}
\twocolitem{\_\_SUN\_\_}{Any Sun}
\begin{twocollist}\itemsep=0pt
\twocolitem{\_\_ALPHA\_\_}{DEC Alpha architecture}
\twocolitem{\_\_INTEL\_\_}{Intel i386 or compatible}
+\twocolitem{\_\_IA64\_\_}{Intel 64 bit architecture}
\twocolitem{\_\_POWERPC\_\_}{Motorola Power PC}
\end{twocollist}