If you tap the [Preview] key before scanning the original, you can check the status of the scanned image in the preview screen. While viewing the preview screen, you can adjust the exposure or color, and configure the preview in your image.
If you configure the preview, you can check the status of the configured preview such as the staple position or page layout.
You can also drag the preview image to edit it, for example, changing, rotating, or deleting an original page.