\item abs\_hamming
\end{itemize}
}
-\twocolitem{\textbf{--filter-parameter}}{Sets the alpha level for Hamming
+\twocolitem{\textbf{\-\-filter-parameter}}{Sets the alpha level for Hamming
window. At setting of 0.54, this equals the Hanning window.}
-\twocolitem{\textbf{--filter-method}}{Selects the filtering method. For large numbers of detectors, \texttt{rfftw} is optimal. For smaller numbers of detectors, \texttt{convolution} might be a bit faster.
+\twocolitem{\textbf{\-\-filter-method}}{Selects the filtering method. For large numbers of detectors, \texttt{rfftw} is optimal. For smaller numbers of detectors, \texttt{convolution} might be a bit faster.
\begin{itemize}\itemsep=0pt
\item convolution
\item fourier
\item rfftw
\end{itemize}
}
-\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.
+\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.
\begin{itemize}\itemsep=0pt
\item direct
\item inverse-fourier