Piotr focused on refining documentation within the riscv/sdtrigpend repository, specifically addressing the x0 register conditions in the RISC-V specification. Over the course of a month, he improved the clarity and consistency of technical documentation by correcting grammar, enhancing formatting, and aligning content with established documentation standards. Using adoc and leveraging his skills in technical writing and documentation, Piotr reduced ambiguity for both users and contributors by clarifying special cases involving the x0 register. The work addressed a targeted need for precise language and formatting, resulting in more accessible and maintainable documentation, though the scope was limited to a single feature.