2. Click the big "A" in the upper left corner to select the file, and click Print (you can also use the shortcut key ctrl+P) to open the print interface.
3. Select the print range as window, and then box out the graphics.
4. When you click on the preview in the lower left corner, you will find that all four sides of the drawing are "AutoCAD Education Edition Product Making".
5. Right mouse button, click the Exit key, click the big "A"-File-Save As in the upper left corner (you can also use the shortcut key ctrl+Shift+S) to change the file type to AutoCAD2007DXF(*). Dxf), and then click Save.
6. Close the original drawing, click Open in the upper left corner, select the file location in the storage location of DXF file, and change the file type to DXF(*. Dxf), then click the previously saved file and click Open.
7. Select print preview, and "AutoCAD education edition product production" will be deleted from the print preview.