Support for the AutoCAD files up to version 2013 has also been done with an alternate format, which has a format identifier labelled REALDWG. The presence of two alternate formats means that there are some parts of this document that apply to REALDWG specifically, and may be duplicating pre-existing information about the handling of AutoCAD files. One significance of the REALDWG reading and writing of AutoCAD files is that it complies with AutoDesk AutoCAD TrustedDWG™ reading and writing.
This chapter assumes familiarity with AutoCAD-compatible systems and the entities (features) that are manipulated within these systems.
Note: Throughout this chapter, the AutoCAD file is referred to as a drawing file rather than a DWF file.
What is TrustedDWG?
Users can specify whether they would like Autodesk AutoCAD 2007 and newer versions to notify them when the DWG file they are opening was saved using an application that was not created by an Autodesk product or RealDWG licensee.