This tutorial is set by the author to use the CC By-NC-SA protocol.
1. Make sure you have at least one piece of paper in the backpack
2. Right -click camera into the viewfinder
3. Use the mouse roller to adjust the focal length (black bar above)
4. Adjust the timely right -click to take a picture, and get a photo at the same time
5. Right -click photos can enter the preview
6. Put photos with photos and a piece of paper, you can copy the photo together