\HeaderA{alpha}{alpha}{alpha}
\keyword{internal}{alpha}
\begin{Description}\relax
Give a colour an alpha level
\end{Description}
\begin{Usage}
\begin{verbatim}alpha(colour, alpha)\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{colour}] colour
\item[\code{alpha}] alpha level [0,1]
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
\end{Details}
\begin{Author}\relax
Hadley Wickham <h.wickham@gmail.com>
\end{Author}
\begin{Examples}
\begin{ExampleCode}\end{ExampleCode}
\end{Examples}

