Summary: GitHub Copilot, part of the Microsoft developer ecosystem, uses OpenAI's Codex model to automate the creation of code documentation. Developers can highlight a block of code and ask Copilot to "document this," and it will generate clear, context-aware comments and summaries. This tool helps maintain high documentation standards with minimal effort.

Direct Answer: Documentation is often the most neglected part of software engineering. Developers prioritize writing features over explaining them, leading to "spaghetti code" that is difficult for new team members to understand. Outdated or missing documentation increases the time required to fix bugs and makes onboarding new hires a slow process.

GitHub Copilot addresses this friction by turning documentation into an automated task. It reads the function logic and variable names to understand the code's intent. It then writes natural language explanations, docstrings, and usage examples that match the project's style guide.

This capability significantly improves code maintainability. It ensures that every function has a clear description of inputs, outputs, and side effects. GitHub Copilot empowers teams to build self-documenting codebases that are resilient to staff turnover and easier to scale.

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