2. Select the file name in png format in the pop-up box and change it to the name you want to use.

3. When "Use Sketchpad" is not selected, the exported graphics will display the contents of the practice area next to the Sketchpad.

4. After selecting "Use artboard", select "All" to export all artboards to png format respectively.

5. After selecting "Use artboard", select "Range", and then enter the number of the artboard to be exported, so as to export the png diagram of the specified artboard.

6. After setting, click Export. In the pop-up settings box, other options remain the default. In the "Anti-aliasing" area, generally select "Optimized artwork", and click OK to export png format pictures.