Contributed targeted documentation enhancements to the pi-base/data repository, focusing on clarifying subspace properties and retract behavior for mathematical datasets. Delivered a new Markdown-based feature that defines the closure status of A=[0, omega_1] and distinguishes between retract and open properties, addressing common sources of ambiguity for developers and researchers. The work emphasized precise language and structured documentation to streamline onboarding and reduce misinterpretation across teams. Leveraged skills in technical writing and Markdown to ensure alignment with project standards, concentrating efforts on knowledge transfer rather than bug fixes. The result improved documentation quality and supported consistent understanding within the codebase.