Guttering -

: Thicker books require deeper gutters (wider margins) because the bulk of the pages prevents the book from opening flat.

: Prevents text from being obscured or lost in the binding. GUTTERING

The gutter ensures that text doesn't disappear into the "fold" (the spine) of a bound document. : Thicker books require deeper gutters (wider margins)

: In software like Word or Google Docs, you use "mirror margins" so the gutter stays on the inside edge of every page. 🛠️ The "Gutter" in Digital Design & Code GUTTERING