\begin{Schunk}
\begin{Sinput}
 var(X)
\end{Sinput}
\begin{Soutput}
         [,1]       [,2]      [,3]       [,4]
[1,] 1.057213  1.1005485  4.383614  2.9438276
[2,] 1.100549  4.3144473 -1.067406  0.8533109
[3,] 4.383614 -1.0674059 47.564156  6.9088575
[4,] 2.943828  0.8533109  6.908857 16.1618587
\end{Soutput}
\end{Schunk}
