Values.RangeSourceA range of integer values.
type nonrec t = {from : Integer.t option;The minimum value in the range.
*)to_ : Integer.t option;The maximum value in the range.
*)step : IntegerOptional.t option;The step value for the range. For example, if you have a range of 5,000 to 10,000, with a step value of 1,000, the valid values start at 5,000 and step up by 1,000. Even though 7,500 is within the range, it isn't a valid value for the range. The valid values are 5,000, 6,000, 7,000, 8,000...
*)}