With this description of ILEX in mind, we can explore the analogy with PARETO in more detail. Where PARETO embarks on the execution of a sketchy plan to start moving around the truck world, ILEX embarks on a graph traversal, starting out from the topic entity and guided by the desire not to digress excessively. The text potential offers options to ILEX in a similar way to PARETO's world. In PARETO, reference features indicate possible opportunities; in ILEX this role is played by the interest and importance annotations. Deeper analysis is required by PARETO before seizing an opportunity; this is probably analogous to the way that ILEX attempts to find the globally best way of incoporating material into the RST tree.