This document discusses various techniques for maintaining code quality, including pair programming, test-driven development, code reviews, and self-documenting code. It notes that pair programming involves two developers sharing one monitor, keyboard, and mouse to collaboratively write code. Benefits include higher quality code, knowledge sharing, and a teaching tool. Code reviews search for bugs, design flaws, nonconformance with requirements or style guides. Comments should explain why code is written a certain way rather than describing how.