pub fn main(world: World) -> Void raises {
    let count: usize = std.args.len()
    let first: Maybe<String> = std.args.get(1)
    let missing: Maybe<String> = std.args.get(99)
    if count == 3 && first.has && !missing.has {
        check world.out.write(first.value)
        check world.out.write("\n")
    }
}