// I/O is a complicated topic, so the code to do that is not exactly pretty - but well,
// let's get that behind us.
-// I/O is provided by the module `std::io`, so we first import that.
+// I/O is provided by the module `std::io`, so we first have import that with `use`.
// We also import the I/O *prelude*, which brings a bunch of commonly used I/O stuff
// directly available.
use std::io::prelude::*;