\twocolitem{{\bf wxFILE\_MUST\_EXIST}}{The user may only select files that actually exist.}
\twocolitem{{\bf wxMULTIPLE}}{For open dialog only: allows selecting multiple files.}
\twocolitem{{\bf wxCHANGE\_DIR}}{Change the current working directory to the directory where the file(s) chosen by the user are.}
\twocolitem{{\bf wxFILE\_MUST\_EXIST}}{The user may only select files that actually exist.}
\twocolitem{{\bf wxMULTIPLE}}{For open dialog only: allows selecting multiple files.}
\twocolitem{{\bf wxCHANGE\_DIR}}{Change the current working directory to the directory where the file(s) chosen by the user are.}