Function new_form 

pub(crate) fn new_form(
    shared: &Shared,
    from: &str,
    key: &str,
    start: f64,
    list: &str,
) -> String

The form of a task not made yet, as task gives one made (no card: it is not read yet): blank, or what Add ▾ makes from from (key, start: which message, which occurrence). In list, else the usual list; what that list keeps. Nothing is written: save with an empty UID makes it, once it has a title. {“error”} when what it comes from is gone.