In January 2026, Jonas Becker enhanced the developer experience for the FZJ-IEK3-VSA/FINE repository by delivering comprehensive documentation improvements for the BalanceLimit feature within EnergySystemModel. Using Python and leveraging his skills in data analysis and technical documentation, he clarified data structures and provided detailed usage examples, aligning the documentation with established docstring standards. This work addressed onboarding challenges by making the codebase more accessible and reducing support overhead for new contributors. Although the focus was on documentation rather than new features or bug fixes, Jonas laid a solid foundation for future enhancements and improved the maintainability of the project’s documentation.