(The link contains the blocks.) The blocks are created using https://scratchblocks.github.io/#?style=scratch3&script=when%20flag%20clicked%20%0Aforever%20%7B%0A%2F%20%2F%20%2F%5Bstop%20and%20run%20v%5D%20in%20%5B1st%20frame%20v%5D%20%3A%3A%20control%20cap%0A%7D%20if%20run%20in%201st%20frame%20%7B%0Astop%20%5Ball%20v%5D%20%3A%3A%20control%0A%7D%20%3A%3A%20control%20cap%0Awhen%20%40stopSign%20pressed%20%3A%3A%20events%20hat%0A%20%2F%20%2F%20%2F%5Brun%20v%5D%20in%20%5B1st%20frame%20v%5D%20%3A%3A%20control%20cap
