+All filenames (including the Default topic) are relative to the
+location of .hhp file.
+
+{\bf Localization note:} In addition, .hhp file may contain line
+
+\begin{verbatim}
+Charset=@rfc_charset@
+\end{verbatim}
+
+which specifies what charset (e.g. "iso8859_1") was used in contents
+and index files. Please note that this line is incompatible with
+MS HTML Help Workshop and it would either silently remove it or complain
+with some error. See also
+\helpref{Writing non-English applications.}{nonenglishoverview}