Joffrey Bion refined the Amper CLI documentation in the JetBrains/kotlin-multiplatform-dev-docs repository, focusing on clarifying that Amper operates as a standalone CLI application. He systematically removed outdated references to Gradle, ensuring the documentation accurately reflects the current product architecture and reducing potential confusion for new users. Using Markdown and leveraging his technical writing and documentation skills, Joffrey improved onboarding efficiency and helped align the documentation with the evolving development workflow. The work demonstrated careful attention to documentation governance and cross-team communication, resulting in more maintainable and accessible technical resources, though it did not involve direct bug fixes or feature development.