Eugenio Ceschia updated the Node.js CLI documentation in the nodejs/node repository, focusing on clarifying the allowed values for the --cpu-prof-name option. By explicitly documenting that patterns such as ${hhmmss} and ${pid} are not supported, Eugenio aligned the documentation with the actual CLI behavior, reducing the risk of user misconfiguration during CPU profiling. This work involved technical writing in Markdown and required a strong understanding of CLI development standards. The update improved onboarding for performance tuning and reduced potential support overhead, demonstrating careful attention to detail and effective cross-team validation between documentation and code for accurate user guidance.