Setting User Options
Open a report in RDA.
From the View menu, select User Options.
On the User Options form, select from the available options under the General heading, and click Apply.
Apply enables you to view modifications without quitting the form.
Select the Show Rulers option, and then select from these options in the Ruler Units field:
Inches
Centimeters
Points
Select the Prompt Before Running Preview option to present a prompt before running the preview.
Enter the number of rows to process in the Rows to Preview field, and click OK.
Enter a number that provides enough records to enable you to verify the format of the report and review totaling or other logic, while keeping the number of rows that are processed to a minimum.