Worked on enhancing developer onboarding and repository hygiene for the mozilla/rhino project by improving the BPjs library documentation. Focused on updating the USAGE.md file, this effort introduced a clear description of the BPjs library to assist new users and reduce initial support queries. The work emphasized documentation best practices, leveraging Markdown for content clarity and Git for version control and traceability. No bugs were addressed during this period, as the primary objective was to align documentation with repository standards. This contribution reinforced onboarding processes and ensured that technical documentation remained accessible and consistent for the open-source community.