Function hold_line 

fn hold_line(
    event: &str,
    kind: &str,
    decision: &Decision,
    cause: Option<&Cause>,
    gated: Option<&Gated>,
    now: &Zoned,
) -> String

The listener’s line at a hold (docs/android.md, “In the phone’s log”): the kind of its channel, until when it waits, or for good, and what decided it (appnotes::cause): its conversation’s or its app’s own row, a gathering and what gathers it, what it is for, the columns of the matrix that hold it now (do-not-disturb with what holds it). “Notes: held: messages 1 until 10:50; why: dnd (focus session).” Held again on its return at its time: “held again”. Never a name, a number, an app nor who wrote.