...
Individual columns are separated with \& and are ended with *
* a double-slash
The output is shown below:
...
the actual image is include with the \includegraphics command. It has some useful options to scale an image
Wiki Markup \[scale=0.8\] will scale the picture by a factor of 0.8Wiki Markup \[width=0.5\textwidth\]will make the picture width to be 80 % of the total text width