Content exclusions prevent GitHub Copilot from using the excluded content as context and stop suggestions from being generated in those files.

GitHub Copilot includes a toxicity filter to prevent the generation of harmful or inappropriate content. This filter flags prompts or code snippets that contain hate speech, discriminatory language, or sexually suggestive or explicit content. This ensures a safe and respectful coding environment.
Reference: GitHub Copilot documentation on safety and content filtering.

"/tests: Generate unit tests for the selected code or function."
This is the official description of the /tests slash command, confirming it is the command used to create unit tests.
References: GitHub Copilot Chat slash command reference.

GitHub Copilot can analyze existing code and suggest refactoring improvements to enhance code quality, readability, and maintainability. It can propose changes to improve code structure, reduce complexity, and follow best practices.

GitHub Copilot Individual provides code suggestions and chat features when used with supported IDE extensions like Visual Studio, VS Code, and JetBrains IDEs.
Reference: GitHub Copilot Individual features documentation.