Oki ES3640E - Manual (Page 188)

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A-188 Basics of Imposition
ES3640e MFP EFI Job Management Guide - 188
insert blank pages intentionally, for example after the cover page,
after the table of contents, or between chapters. To insert blank
pages, open the job in the Thumbnail A window, right-click the
page you want to add the blank to (or pull down the Page menu),
and select Insert blank page.
DocBuilder Pro allows you to add blank pages or add, delete, and
rearrange pages from multiple source documents easily, so you
can quickly preview the results of page manipulations.