Online Documentation for SQL Manager for SQL server
Margins
The Margins tab of the Page Setup dialog allows you to specify the size of the margins and running titles.
Use the spinner controls to specify the size of top / bottom / left / right margins and header / footer (in inches or millimeters, depending on the unit of measure specified in the Options dialog). The Preview area on the right illustrates the changes you have made.
If you have specified an improper value, you can click the Fix button to correct it.
To restore the default size values, click the Restore Original button.
Center on page
This group allows you to specify whether the text should be centered horizontally and/or vertically on the page.