Epson B 310N - Manual (Page 71)

Printing with Special Layout Options 71
5. Select the appropriate Size setting.
6. Select Portrait (tall) or Landscape (wide) to change the orientation of your printout.
7. Click the Page Layout tab and select Manual under 2-sided Printing. Then select the
Folded Booklet check box.
8. Click Margins to open the Margins window.