We describe the actions: in the processes, Use Cases, instructions. We want to write shortly and so as not to cause questions. And there is always not enough information, time for a detailed and intelligible description. We model more sophisticated and our descriptions are more and more incomprehensible. There is a solution: we can treat the description of the process, Use Case, as creating a tool. When you explain to a person what you need to do, you give a tool for solving some problem and must explain why it is needed, how and in what conditions it can be used. In the workshop, I will offer a template for describing such a tool-method. Let's practice describing different tasks - processes, user scenarios - for which we usually use familiar notations, and try to find “white spots” in the usual use of our favorite tools.