\begin{Schunk}
\begin{Sinput}
> plot(x = c(-5, 5), y = c(-10, 20), type = "n", xlab = "", ylab = "")
> x <- c(-2, 1, 3)
> y <- c(9, 7, 2)
> points(x = x, y = y)
> ## Same result as
> ## points(x, y)
> ## because of R positional matches
\end{Sinput}
\end{Schunk}
