extern crate cursive;
use cursive::views::TextArea;
use cursive::Cursive;
use cursive_multiplex::Mux;
fn main() {
let mut siv = Cursive::default();
let mut mux = Mux::new();
let upper = mux
.add_right_of(TextArea::new(), mux.root().build().unwrap())
.expect("upper failed");
let lower = mux.add_below(TextArea::new(), upper).expect("lower failed");
let _id = mux.add_below(TextArea::new(), upper).expect("1st failed");
mux.set_focus(lower);
siv.add_fullscreen_layer(mux);
siv.run();
}