It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
The page created by the The Scholarly Publishing & Academic Resources Coalition (SPARC) includes links to an Introduction to Copyright Resources for Authors, the Author Rights brochure, and the US SPARC Author Addendum, "a legal instrument that you can use to modify your copyright transfer agreements with non-open access journal publishers. It allows you to select which individual rights out of the bundle of copyrights you want to keep."
SHERPA RoMEO is an online resource that aggregates and analyses publisher open access policies from around the world and provides summaries of self-archiving permissions and conditions of rights given to authors on a journal-by-journal basis. "Use this site to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement." The site also