+\twocolitem{{\bf --filter-generation}}{Selects the filter generation. With convolution, {\tt direct} is the proper method to select. With any of the frequency methods, {\tt inverse-fourier} is the best method.
+\begin{itemize}\itemsep=0pt
+\item direct
+\item inverse-fourier
+\end{itemize}
+}
+\twocolitem{{\bf --interpolation}}{Interpolation technique. {\tt linear} is optimal.
+\begin{itemize}\itemsep=0pt
+\item nearest
+\item linear
+\end{itemize}
+}
+ \twocolitem{{\bf -backprojection}}{Selects the backprojection technique. A setting of {\tt idiff3} is optimal.
+\begin{itemize}\itemsep=0pt
+\item trig
+\item table
+\item diff
+\item diff2
+\item idiff2
+\item idiff3
+\end{itemize}
+}
+\twocolitem{{\bf --zeropad}}{ Zeropad factor. A setting of {\tt 1} is optimal.}
+
+ \twocolitem{{\bf --preinterpolate}}{Selects preinterpolation interpolation technique and sets the preinterpolation factor. Currently, this is experimental and does not work well.}
+\end{twocollist}
+
+\chapter{The Web Browser CGI Interface}\label{webinterface}\index{Web Interface}%