During March 2026, Sduchd enhanced the dataZoom feature in the VisActor/VChart repository, focusing on refining how start and end positions are calculated based on the axis range, including support for reversed axes. Using TypeScript and leveraging front end development and data visualization skills, Sduchd addressed the challenge of ensuring accurate and predictable zoom behavior, particularly for charts with inverted scales. The solution improved range factor handling to prevent misalignment during zoom operations, aligning with product goals for reliable data exploration. All changes were delivered in a single, traceable commit, demonstrating a focused and maintainable approach to feature development.