Formats strategic games. For a 2x2 game, for example, the input:
\begin{game}{2}{2} &$L$ &$M$\\ $T$ &$2,2$ &$2,0$\\ $B$ &$3,0$ &$0,9$ \end{game}
produces output with (a) boxes around the payoffs, (b) payoff columns of equal
width, and (c) payoffs vertically centered within the boxes. Note that the game
environment will not work in the argument of another command.
