Function plan 

fn plan(
    own: Option<Tried>,
    read: bool,
    first_ok: bool,
    since: i64,
    stamp: i64,
    alarms: bool,
) -> Plan

The plan for a dose to remind from since (its time, or the waking it waited for), at stamp: own, this computer’s entry for it (read: the file read here); first_ok, whether this computer may be its first (first_here: the phones’ word on its opening, before since); alarms, a phone may remind it by its own alarm ten minutes on: none from here around it, promised. The rule: a first reminder is plain only where it is the dose’s first; every other says the doubt first; none twice in the same words.