Object Enablers (OEs) can be thought of as a ‘translator’ for custom objects. Applications based on the AutoCAD® platform, (including Autodesk products like AutoCAD® Architecture, and non-Autodesk products like Bentley AutoPlant) generate custom objects that are saved into the DWG file format. These custom objects are typically found in content libraries that are built into these applications.
Many applications have the ability to read DWG files; however, outside of the authoring application any custom objects cannot be interpreted. As a result, DWG file readers display such custom objects incorrectly, as proxy graphics (wireframe geometry), unless the required OE is installed on the machine reading the DWG file.