Selected Fragments of Implementation (Update)

[JonathanDebug]

Enhance the "Selected Fragments of Implementation" section by incorporating additional code snippets and accompanying explanations. This task involves identifying pivotal aspects of the codebase and presenting concise yet informative segments along with brief explanations. Ensure clarity, organization, and consistency in the format to facilitate a comprehensive understanding of the project's implementation details. Focus on key functionalities, algorithms, or design patterns, prioritizing areas relevant to project milestones and frequently modified sections.

I suggest this task would have a 5 in urgency and 3 in difficulty.

[Fabian-J]

Added another code snippet and explanation in the backend.