InDesign Certification Practice Exam 2026 – Complete Preparation Resource

The slug is the area outside the page boundary that is reserved for printer instructions and production notes. This space carries information such as job name, date, version, color specs, and any special printing instructions, helping the printer set up the job. It isn’t part of the final page content and is typically not printed unless specifically requested. This distinguishes it from bleed, which is beyond the page edge to ensure color runs off the edge after trimming; margins, which are the safe area inside the page where important content should stay; and facing pages, which describes the layout of two-page spreads.