Single Line Backdate
Enter a date in this field to print an additional line in the cost report
containing the total cost of the building indexed back to the date entered. Enter
this date in the format mm/yyyy, e.g., 8/1996 for August 1996.
The earliest date available is October 1975. The latest date available depends
on which cost update you have installed, and displays as the Cost Data Date
when you select the About Residential Estimator option in the Help menu.