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Primary Actor: Crewmember
Stakeholders & Interests: 

Brief Description: A crewmember wants to update an existing tab.

Preconditions: A crewmember has logged in to the web application and the crewmember needs to have a tab
Postconditions: The crewmember can see their updated tab
Main success scenario (basic flow): 
Actor ActionSystem Responsibility

1. The crewmember updates a tab


3. The crewmember supplies the system with a tab name.



2. System asks for a new tab name


4. System validates if the supplied tab name is correct.

5. System updates the tab name.

Extensions (alternative flow):




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Primary Actor: Crewmember
Stakeholders & Interests: 

Brief Description: A crewmember wants to read an existing tab

Preconditions: A crewmember has logged in to the web application and the crewmember needs to have a tab
Postconditions: The crewmember can see its their tab
Main success scenario (basic flow): 
Actor ActionSystem Responsibility

1. The crewmember reads a tab.



2. System shows details of given tab

Extensions (alternative flow):




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