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GstarCAD 2026 → User Guide → Share Data between drawings and Application

If you receive project drawings in the form of a PDF file, you can reuse that PDF data in your own GstarCAD drawing files. For example, imagine that you are a landscape designer and you receive a PDF file for this building project. This particular sheet includes a floor plan that you want to use as starting point for your landscape design.
After you enter the PDFATTACH command at the Command line, the Select Reference File dialog box is displayed.