Copyright law gives the creator of copyrighted works exclusive rights, including the right to:
Your works are protected by copyright as soon as you fix them in a tangible medium, including electronic media. When you write an article for a scholarly journal, you are typically asked to sign a publication agreement or a copyright transfer agreement. The purpose of this document is to transfer your ownership of copyright to the publisher.
Copyright is a bundle or package of the rights cited above. You can “unbundle” these rights and transfer only some of them to publishers. For example: