Worked on enhancing developer-facing documentation in the dealii/dealii repository, focusing on Newton solver workflows. The contribution clarified the structural properties of matrices used in the Newton step, specifically addressing symmetry and positive definiteness, which are essential for robust linear solver selection. By providing targeted guidance, the work aimed to reduce misconfigurations and support more reliable simulation outcomes. The approach combined expertise in C++, mathematics, and numerical methods to ensure the documentation was both technically accurate and accessible. This update facilitates correct solver configuration, streamlines onboarding for engineers, and supports future maintenance of Newton-based solvers within the codebase.