\chapter{The Graphical User Interface}\label{ctsim}\index{ctsim}%
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\twocolitem{\textbf{Filter Generation}}{Selects the filter
generation. With convolution, \texttt{direct} is the proper method
to select. With any of the frequency methods,
-\texttt{inverse-fourier}is the best method.
+\texttt{inverse-fourier} is the best method.
\begin{itemize}\itemsep=0pt
\item direct
\item inverse-fourier