Function news_from 

fn news_from(due: i64, woken: Option<(i64, i64)>) -> i64

From when a phone’s alarm waits for news of a dose due at due: its time; the dose due while sleep or a pause held it (hours::woken: when it began and ended), the waking, when a computer keeping the doses reminds it too, so that the two never remind it together, both plainly (review of battery part C, the fourth round).