\HeaderA{S4Help}{A function to find help for S4 classes and generics}{S4Help}
\begin{Description}\relax
This function takes the name of either a class or a generic function
and finds a set of related manual pages. The user then selects which
manual page they want.
\end{Description}
\begin{Usage}
\begin{verbatim}
S4Help(name, signature)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{name}] The name of the S4 class or generic function. 
\item[\code{signature}] Currently not used. 
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
For S4 classes, the class and any superclasses are found and the user
can select which manual page they want.  If the supplied name corresponds 
to a generic function, then that function, or any of its methods can be 
selected.
\end{Details}
\begin{Value}
\code{NULL} is returned, invisibly. The function is called purely for side
effect.
\end{Value}
\begin{Author}\relax
R. Gentleman
\end{Author}
\begin{SeeAlso}\relax
\code{\LinkA{help}{help}}
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
## Not run: 
   S4Help("classRepresentation")
   S4Help("coerce")
## End(Not run)
\end{ExampleCode}
\end{Examples}

