2. Set "Specify font start style" as shown in the figure, and then click "OK" to open the file.
3. After opening the file, select Save As.
4. Select DXF type in File Type, and then click Save.
5. Then close the file and select "Yes" in the dialog box shown below.
6. Find the "DXF" file of this file in the folder under the previous saving path, and then open it to find that the stamp of the education version has been removed. You can save it as a "DWG" file format and overwrite the original file.