3D ACIS Modeler is the standard for geometric modeling. To accelerate application delivery, developers in a wide range of industries rely on the highest quality 3D modeling technology to address a variety of needs. The modern B-rep modeler at the core of 3D ACIS Modeler supports a wide range of modeling approaches including history-based and multi-dimensional and polyhedral modeling. 3D ACIS Modeler also includes extensions for specific application needs including hidden line removal, deformable modeling, advanced covering and defeaturing.