Just press the green flag.
The purpose of this project is because it is an assignment for school (sarcasm), and also because I had a weird curiosity for this, and I don't think this has been done before on Scratch, so it would be a nice little thing. The only thing you really have to do is press the green flag, and the curves or lines will slowly be written using the pen extension. There also is a thing showing the peak y using pen and a list, but the pen for it is not smooth. No assistance or inspiration nor projects. All of the code was done by myself, and at most I used my previous knowledge of coding on this, which the previous knowledge did use minor assistance, but barely and guidance, and it was not from any particular source. At least 80% of the code was made with no outside knowledge or assistance coming from other sources in any capacity.