+variables will be expanded in it.
+
+\docparam{flags}{The kind of normalization to do with the file name. It can be
+any or-combination of the following constants:
+\begin{twocollist}
+\twocolitem{{\bf wxPATH\_NORM\_ENV\_VARS}}{replace env vars with their values}
+\twocolitem{{\bf wxPATH\_NORM\_DOTS}}{squeeze all .. and . and prepend cwd}
+\twocolitem{{\bf wxPATH\_NORM\_TILDE}}{Unix only: replace ~ and ~user}
+\twocolitem{{\bf wxPATH\_NORM\_CASE}}{if case insensitive => tolower}
+\twocolitem{{\bf wxPATH\_NORM\_ABSOLUTE}}{make the path absolute}
+\twocolitem{{\bf wxPATH\_NORM\_LONG}}{make the path the long form}
+\twocolitem{{\bf wxPATH\_NORM\_ALL}}{all of previous flags}
+\end{twocollist}
+}
+
+\docparam{cwd}{If not empty, this directory will be used instead of current
+working directory in normalization.}