\begin{Schunk}
\begin{Sinput}
 head(state.name)
\end{Sinput}
\begin{Soutput}
[1] "Alabama"    "Alaska"     "Arizona"    "Arkansas"   "California" "Colorado"  
\end{Soutput}
\begin{Sinput}
 head(state.abb)
\end{Sinput}
\begin{Soutput}
[1] "AL" "AK" "AZ" "AR" "CA" "CO"
\end{Soutput}
\end{Schunk}
