STEP (Standard for the Exchange of Product model data) is a platform-independent file format for product data representation and exchange. It is published and maintained by the International Standards Organization (ISO) as ISO 10303.

STEP files can contain 3D design data and other types of product information. You can Open or Place STEP files (*.stp; *.step) in Arbortext IsoDraw CADprocess only. Settings on the STEP Import page in the Preferences dialog box control how STEP file data is imported.

In a technical illustration, only the outline structure is important. Therefore, STEP elements that can be converted to surfaces or lines are imported and all other STEP elements are ignored. If assembly structures are present, these are adopted similarly to the IGES format.