Yu Fukushima consolidated and enhanced the PLATEAU 3D City Model documentation in the metanorma/mn-samples-plateau repository, focusing on specifications, LOD definitions, data structures, and file naming conventions. Using AsciiDoc and adoc, Yu standardized formatting and expanded quality requirements, abbreviations, and footnotes to clarify standards and improve usability for developers and implementers. The technical writing and documentation work addressed ambiguities in the existing materials, enabling faster onboarding and reducing support overhead. By delivering a unified documentation set, Yu improved traceability and compliance guidance, supporting more consistent implementation and validation across tools and pipelines within the PLATEAU project.