Press Space to see an old part of the code. This project has a bright flashing background.
This was linked on a web page describing how to use Scratch dated Oct 2004 with several sample programs. The directory used to be found at http://llk.media.mit.edu/courses/software/scratch I modified the program as needed to allow it to work under Scratch 3.0 Please see the programs in this Studio: https://scratch.mit.edu/studios/30767325