The IGES (Initial Graphics Exchange Specification) file format is a vendor-neutral file format that allows the digital exchange of information among Computer-Aided Design (CAD) systems. It is primarily used to transfer 2D and 3D geometry data, along with associated non-geometric data such as annotations, dimensions, and manufacturing information, between different CAD/CAM/CAE software packages. IGES files store data in ASCII format, making them relatively platform-independent. While IGES was a widely used standard for many years, it has largely been superseded by newer formats like STEP (Standard for the Exchange of Product Data) due to limitations in representing complex geometries and the potential for data loss during translation. However, IGES remains relevant for legacy systems and for exchanging data with older software that may not support newer formats. The format supports various geometric entities, including lines, arcs, splines, surfaces, and solids. The specification defines a structured way to represent these entities and their relationships, enabling different CAD systems to interpret and display the data accurately. Despite its age, IGES continues to be a useful tool for interoperability in specific scenarios.