The amount of gutter needed differs depending on the binding method.
It all depends on the specifications given by the printing company that is handling the production.
The print shop may want you to include that measurement in your digital files.
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Both have separate meanings.
The gutter is the white-space between the two pages in the middle spine of the publication.
What Is Creep?
Creep specifies the distance pages move away from the spine to accommodate paper thickness and folding.
For example, insaddled-stitched publications, sets of pages are nested one inside another before being stitched.
Then the outside “lip” is trimmed to apply an even edge to the booklet.
Some types of binding require no adjustments to the gutters.
