The fill each direction implies — what the dialog offers, resolves and previews per radio. A
direction that is absent, or null, has no room and its radio is disabled.
The direction to open on.
OptionalnotifierShows the dialog; nothing opens without one.
OptionalonThe dialog closed — after its fill ran, or without one.
The IAutoFill.Preset.id to open on.
The range the dialog reports as the selection.
What the Series dialog is opened on — see openFillSeries.