Guttering

: 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

The gutter ensures that text doesn't disappear into the "fold" (the spine) of a bound document. GUTTERING

Gutter highlights how-to - Technical Support - Sublime Forum : In software like Word or Google Docs,