Bluehill 3.41 has new calculations in the areas of fracture toughness, enhanced user calculation with logic (or as I would like to call "user calculation on steroids"), new specimen protect gain to adjust the crosshead speed for automatic reduction of load after the test and a new criterion to specify end of test. Find more details on the latest features page. Also let me know which of the new features you would like me to blog about in my next blog.