A book layout also specifies the means by which sheets are gathered and bound. Three standard methods are saddle stitch, perfect binding, and nested saddle.

The binding method affects the order in which pages are placed on the sheet. Your imposition settings must specify the method by which the finished job will be bound to achieve the correct layout and finished output.

• Saddle stitch: Signatures are folded together as a group, and then stapled or stitched along the center fold, which forms the spine of the booklet.

  

  Callout	Refers to
  1	Saddle (left) binding
  2	Saddle (right) binding
  3	Saddle (top) binding

• Nested saddle: Combines saddle stitch and perfect binding methods. The signatures are folded together in groups. Each group forms a subset. The subsets are then stacked one on top of another and glued, as with perfect binding. When you specify nested saddle binding for a booklet in Fiery Impose, the sheets/subset setting allows you to specify the number of folded sheets in a group (subset). The cover is usually printed as a different job because it is printed with different paper stock and different imposition layout and sheet size.

  

  Callout	Refers to
  1	Nested Saddle (left) binding
  2	Nested Saddle (right) binding
  3	Nested Saddle (top) binding

• Perfect binding: Separate, folded pages are printed and stacked in booklet order. Finished pages are trimmed and then glued adjacent to one another. The cover is usually printed as a different job because it is printed with different paper stock and different imposition layout and sheet size.