Mirrored margins for facing pages
You can set up â€œmirroredâ€ margins for facing pages within one page style. More complex differences between right and left pages may require separate page styles; these are discussed in Chapter 4, â€œFormatting Pagesâ€.
To set up â€œmirroredâ€ facing pages, go to the Page tab of the Page Style dialog box (Figure 175). Choose Mirroredfor Page layout in the Layout settings section and set the inner and outer margins in the Margins section.