Amir Shetaia enhanced the command line interface for the ERGO-Code/HiGHS repository by introducing explicit error handling and user guidance related to the HiPO solver feature. Working in C++, Amir designed the CLI to detect when users request HiPO functionality that is unavailable in the current build, providing clear feedback and instructions for enabling HiPO during compilation. This approach improved reliability and reduced user confusion, ensuring that users are informed about feature availability and correct configuration steps. The work demonstrated a focused application of C++ development, command line interface design, and robust error handling, addressing a specific usability challenge in the project.