Tracker 4.97 installers for Windows, Mac and Linux are now available from both the Tracker home page (http://physlets.org/tracker/) and ComPADRE (http://www.opensourcephysics.org/items/detail.cfm?ID=7365).
This new version increases the maximum step count to 60,000, improves font/button resizing for hi res screens, and adds a new Stamp action to particle models that enables you to create a stamped point mass that clones the model's current positions.
