Automation based on code generation from diagrams, usage of advanced components, or automated testing based on the GUI is becoming a standard in the software production process. The next stage is an automatic generation of a training simulation. Thanks to it, the end-users participating in a training can work with their system version, and after finishing the course they may take such a simulator home or to their office and keep on practicing. Automatic Training Generations (ATG) system is designated for the automatic generation of the final system simulations. ATG allows to generate a training for the given client, regarding his/her particular system version and individual system settings. Moreover, ATG 2.0 makes possible to use differences mode, which presents only changed system features.