Matrix Requirements organizes Design Input and Design Output in item categories. By default the following categories exists

• REQ: Requirements contain requirements on what the system should do (e.g. user requirements, regulatory requirements, etc.)
• SPEC: Specification define how the system should do certain things.
• UC: Use Cases can be used to describe frequently used functions or worst case scenarios. This helps to a) document compliance with IEC 62366 and to design for better usability.
• RISK: Risks help to document risks and mitigations, there are several pre-configured risk modules available.
• TC: Test cases define actions and expected results.
• XTC: Executed Tests are used to document tests and use cases which have been executed. 

It is possible to change the categories or input fields for items in each category. 

Note configuration of items and item content must be done by Matrix Requirements staff. Adding new categories to existing project is possible so it is better to start lean.