Use the x key to zoom in and the z key to zoom out, or use the plus and minus buttons or the slider to zoom in and out. Use the arrow keys or drag to pan through the image. If you want to reset zoom and position press r.
The idea is the same as on my HD image test: https://scratch.mit.edu/projects/1225231852/ but then with 4K 16:9 and a larger grid of 8 by 6 480*360 images. that works because 3840/8=480 and is 1920/6=360. Using clones you can then make the images smaller and putting the grid of images back together. So then because you have all 480*360 image parts displayed at the same time it looks like 4K image. Then i also programmed that the tiles that are outside of the view hide so that they dont stay there at the edges.
