Bas contributed to the qgis/QGIS and qgis/QGIS-Documentation repositories by developing and refining user-facing UI features and documentation for GIS editing tools. Using C++, Qt, and XML, Bas enhanced the Offset Curve and Fill Ring tools with contextual help text and detailed tooltips, clarifying advanced options and improving editing workflows. In the Vertex Editor, Bas addressed rendering order to ensure highlighted vertices remained visible during edits. Documentation updates clarified geometry conversion and background layer selection, reducing onboarding friction and support overhead. The work demonstrated a thoughtful approach to usability, focusing on clear communication and iterative UI improvements over two months.