Resources that are not the same can nonetheless be equivalent if they serve the same purpose and cover equally well the expectation of the user navigating to them. This usually involve that the key content is the same.
Web pages and documents (e.g. PDFs, office formats etc.) may be equivalent resources, even if the resources:
- are located on different URLs, including different domains; or
- present different navigation options, e.g. through bread crumbs or local sub menus; or
- contain different amounts of information and/or differently worded information; or
- use different layouts.