Unlike most modeling tools which force a specific paradigm, or limit you to a distinct choice between two or three, CSIM was designed to allow much flexibility and supports an arbitrary number of descriptive modes. It is just a matter of your model set. Your building-blocks for descriptions and the rules they follow determine the paradigm. Libraries for the conventional modes are available. It helps users quickly and painlessly configure initial models of their system for rapid start-up.
Users further customize the models to investigate specific design issues.
ATL provides low-level support when needed to answer questions and to help maintain the models or tools. Often, little support is needed after initial introduction. A one-day tutorial course is sufficient for productive usage of the tools. The tutorial is presented periodically, or it can be arranged. On-line training is also being prepared.