Worked on the rust-lang/reference repository to enhance documentation around Rust compiler diagnostics. Focused on the #[diagnostic::do_not_recommend] attribute, this developer authored detailed guidance explaining its purpose, usage, and the effect it has on error messages by suppressing specific trait implementations from being suggested. The documentation included a practical Markdown code example to illustrate real-world usage, clarifying how the attribute improves developer experience by reducing misleading compiler suggestions. By concentrating on documentation and leveraging Markdown, the work provided clearer guidance for Rust contributors and maintainers, addressing a nuanced aspect of error diagnostics and supporting more accurate and actionable compiler feedback.