\begin{enumerate}\itemsep=0pt
\item Translating the strings in the program text using
\helpref{wxGetTranslation}{wxgettranslation} or equivalently the
-\helpref{\_()}{underscore} macro.
+\helpref{\_()}{underscore} and \helpref{ngettext}{ngettext} macros.
\item Extracting the strings to be translated from the program: this uses the
work done in the previous step because {\tt xgettext} program used for string
extraction recognises the standard \_() as well as (using its {\tt -k} option)