Arduino library

I am currently studying the library

Which library?

to identify critical sections and understand the interactions breasts bookstores.

I like to study breasts, too, but I don't see that that is going to help you. I'm not sure about the bookstores, either.

I join the document I've created, it is in French.

French just does not seem to be a language suited for logical thinking. Just look at how many people come here and start off with "I'm sorry I'm French...".