Use case template

Please use the following use case template for the detailed use cases:

• name: The name of the use case
• description: A short description of the use case
• actor: One or more actors who interact with the system
• precondition: (optional) Assumptions on the system state to enable the use case
• main scenario: A description of the main interaction between user and system -> should only explain what the system does from the user's perspective
• alternative scnearios: Alternative- or fail scenarios
• postcondition: (optional) A predicate on the system states before and after the execution of the use case
• note: Used for everything that does not fit in the above categories