What's New in SystemModeler 4.1 SystemModeler 4.1 is a fee-based Update for every SystemModeler licence which held no active premier service before 15th February March 2015 Support for FMI import of models from other tools Reliability analysis of system models using reliability diagrams, fault trees, and parametric lifetime distributions Improved unit support that enables input and plotting in user-chosen units Complete copy and paste support between models Better native look and feel on OS X Improved search and navigation in documentation Fully updated Modelica by Example book on the Modelica language See the complete list of what's new in SystemModer 4.1