l3 writing use cases

Example of a use case

Use case: Register for a course
actor: User

1. User goes to the registration form
2. User enters name and contact details
3. User selects a short course
4. User select a day on which to do the course
5. Clicks on the register button

Exceptional flow:
If the date on which the user selects a course he is already taking another course then the system shows an error "Please choose another date for this course"

Post Condition:
The user is registered for his selected course on the date and this information is stored in the database

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