Developed comprehensive documentation for the modutil command in the tldr-pages/tldr repository, focusing on managing PKCS #11 module information within NSS databases. The work involved creating a new Markdown page that details command-line syntax and provides practical examples for adding and listing modules, aimed at improving clarity for users working with cryptographic tooling. Leveraging skills in technical writing and familiarity with PKCS #11 and NSS concepts, the documentation enhances onboarding efficiency and reduces the likelihood of misconfiguration. The contribution followed Git-based workflows, ensuring consistency and maintainability across the project’s documentation, and addressed a key need for accessible, high-quality technical guidance.