orm on which to develop concrete implementations of these algorithms. Many of the most useful operators, however, do not lend themselves to the explicit matrix representations that Matlab provides. The aim of the Spot Toolbox is to bring the expressiveness of Matlab's built-in matrix notation to problems for which explicit matrices are not practical.</p><p>Please visit the <a href="http://www.cs.ubc.ca/labs/spot">Spot website</a> to download the latest version of the toolbox.</p><h2>Installation<a name="3">