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Hello, I am seeking advice on how to portray just one or a few objects (in my case they are fish) in proximity to a given mouse click using the MASON GUI. Suppose many objects are held in a Continuous2D and displayed using a ContinuousPortrayal2D. I would like for none of the objects to be displayed until the user clicks a region of the display, then one or a few objects are drawn that are in close proximity, perhaps within the bucket covered by the requested region. Could anyone suggest useful Classes or a general approach for tackling this problem? Any help is much appreciated. Bill -------- Bill Harford PhD Candidate Department of Marine Biology & Fisheries Rosenstiel School of Marine & Atmospheric Science University of Miami 4600 Rickenbacker Cswy, Miami FL 33149 Office: 305 421-4611