This is a conversation that the author and publisher will have. Knowledge Unlatched titles are made available under a Creative Commons licence. One of the most common used is CC BY-NC. This type of Open Access licence allows people to share your title, but does not allow them to use the Open Access version to make money or to alter the work without the copyright owner’s permission. However, the actual licence will be for you and your publisher to agree on. For more information about the suite of Creative Commons licences, see www.creativecommons.org.