Appearing on master pages and on every page in the document that is based on the master page, master guides are non-printing lines that aid in text flow and alignment of objects.
Master guides can include column guides, margin guides, and ruler guides. Changes to these master guides affect the guides on all publication pages that use the master guides, unlike local guides that don't appear on master pages.
Using Master Guides: Learn how to set up and use guides of all kinds in page layout software.
Also Known As: layout guides (specifically in Microsoft Publisher) | master guidelines
Examples: The pink and blue lines in the sidebar image represent margin guides, column guides, and ruler guides which act as master guides when placed on the master pages of a document.