Ever wanted to use the set size to make things really big but found that the costume refuses to grow much larger than the window size? Well, here's a neat trick that gets round the problem without having to resort to drawing gigantic costumes! Press SPACE to reverse direction of travel!
To use this technique just copy the 'Hack Zoom To' custom block and ensure you have a single 1x1 pixel costume on the sprite to be enlarged named 'dot'.