Felicio Cassalho enhanced the STOFS-3D Atlantic model’s open boundary capabilities within the schism-dev/schism repository by updating its configuration management. He introduced a targeted feature that incorporated boundary IDs 0 and 1 into both the default configuration and the v8_Hercules factory method, enabling more accurate open boundary handling for Atlantic simulations. Working primarily in Python, Felicio focused on model setup and configuration management to ensure the changes were traceable and maintainable. This work addressed a specific modeling need, improving the readiness of the Atlantic model for simulation scenarios without introducing unnecessary complexity or altering existing bug status.