\twocolitem{{\bf wxOPEN}}{This is an open dialog.}
\twocolitem{{\bf wxSAVE}}{This is a save dialog.}
\twocolitem{{\bf wxOVERWRITE\_PROMPT}}{For save dialog only: prompt for a confirmation if a file will be overwritten.}
-\twocolitem{{\bf wxHIDE\_READONLY}}{Do not display read-only files.}
+\twocolitem{{\bf wxHIDE\_READONLY}}{Do not display the checkbox to toggle display of read-only files. Deprecated in 2.6; the checkbox is never shown.}
\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.}