<<< mml $\left(\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 1\end{array}\right)$ >>> native [ EDelimited "(" ")" [ Right (EArray [ AlignCenter , AlignCenter , AlignCenter ] [ [ [ ENumber "1" ] , [ ENumber "0" ] , [ ENumber "0" ] ] , [ [ ENumber "0" ] , [ ENumber "1" ] , [ ENumber "0" ] ] , [ [ ENumber "0" ] , [ ENumber "0" ] , [ ENumber "1" ] ] ]) ] ]