+\begin{describe}{cls}{information (condition) \&key}
+\end{describe}
+
+\begin{describe}{cls}
+ {simple-information (simple-condition information) \\ \ind
+ \&key :format-control :format-arguments}
+\end{describe}
+
+\begin{describe}{fun}{info @<datum> \&rest @<arguments> @> @<flag>}
+\end{describe}
+
+\begin{describe*}
+ {\dhead{rst}{noted}
+ \dhead{fun}{noted \&optional @<condition>}}
+\end{describe*}
+