I updated the problem statement of part 1 of the semester project to include the following paragraph:
Update: In your document, please be sure to include two additional things: be sure to map the features from your feature list to the use cases in your use case diagram (in the same way they did in the textbook) and also be sure to include a textual justification of your module breakdown. In other words, explain why you picked the modules included in your module breakdown and the purpose they play. Optional: Include an architecture diagram of your system that shows the main components of the system and how they will interact at run-time.
FYI.