Primary Task Response: Within the Discussion Board area, write 400–600 words that respond to the following questions with your thoughts, ideas, and comments. This will be the foundation for future discussions by your classmates. Be substantive and clear, and use examples to reinforce your ideas. One of the main topics this week will be to understand the process of use case modeling being accomplished in the requirements phase. Use cases can be used to actually elicit requirements; therefore, in the discussion this week, you should discuss several use case topics so others can understand your intended actors, relationships, and optional system boundary boxes and packages.  Provide the following in your main response to this discussion question: Describe the actor (external system, person, or organization) who will have an interactive role with your intended software/system.  Name your actor with a singular relevant noun. Describe the roles of all of your intended actors.  Describe the relationships between the actor and the use case, or between two of your actors. Describe the scope of your software/system with a system boundary box.  Describe the optional boundary box and package (if used).  Responses to Other Students: Respond to at least 2 of your fellow classmates with a reply of at least 100 words about their primary task response regarding items you found to be compelling and enlightening. To help you with your discussion, please consider the following questions: What did you learn from your classmate's posting? What additional questions do you have after reading the posting? What clarification do you need regarding the posting? What differences or similarities do you see between your posting and other classmates' postings?