Sometimes, in addition to statistical results, you need to be able to see what certain classes of particles actually look like. An option in the Particle Insight lets you record individual thumbnails for every particle during a run.
As a post-process operation you can request a visual compilation of these thumbnails, ordered according to size. As with other post-process operations, you can restrict the particles that are shown to those that match the filter criteria you specify. The subset of particles will be selected based on whatever size or shape limits that you specify.