Represents a selection of ranges with an active range and an active cell.
The cell coordinates that will receive actions that operate on a single cell.
Optional
The current range if any ranges are selected.
'ranges.length - 1' Copy
'ranges.length - 1'
If the rangeIndex is outside the ranges bounds this will be the defaultValue.
A list of cell ranges that are currently selected.
If this is missing it will be assumed to have a ranges of length 1 that matches the CellCoords.
Represents a selection of ranges with an active range and an active cell.