-\begin{itemize}\itemsep=0pt
- \item \doublehyphen{add} - Add the two images
- \item \doublehyphen{sub} - Subtract the two images
- \item \doublehyphen{multiply} - Multiply the two images
- \item \doublehyphen{divide} - Divide the two images
- \item \doublehyphen{comp} - Statistically compare the two images
- \item \doublehyphen{column-plot n} - Plot the values of a particular col
- \item \doublehyphen{row-plot n} - Plot the values of a particular row
-\end{itemize}
+
+\begin{twocollist}
+ \twocolitem{\doublehyphen{add}}{Add the two images.}
+ \twocolitem{\doublehyphen{sub}}{Subtract the two images.}
+ \twocolitem{\doublehyphen{multiply}}{Multiply the two images.}
+ \twocolitem{\doublehyphen{divide}}{Divide the two images.}
+ \twocolitem{\doublehyphen{comp}}{Statistically compare the two images. The standard
+ \helpref{three distance measurements}{conceptimagecompare} are reported.}
+ \twocolitem{\doublehyphen{column-plot n}}{Plot the values of a particular column.}
+ \twocolitem{\doublehyphen{row-plot n}}{Plot the values of a particular row.}
+\end{twocollist}