Robert Riglar contributed to the riscv/riscv-cheri repository by addressing a specification accuracy issue in the CHERI RISC-V documentation. He identified and corrected a typo in the funct5 definition, ensuring the instruction set was accurately represented and aligned with the actual encoding. This targeted fix, implemented using adoc and leveraging his skills in documentation and technical writing, reduced the risk of errors in downstream tooling such as assemblers and verifiers. By improving the reliability of the specification, Robert’s work helped streamline toolchain integration and minimized potential security and interoperability issues, demonstrating careful attention to correctness and stability in critical components.