When publishing with an Open Access journal, at some point you will be asked under which CC-license you would like your article to be published. These licenses determine how someone may use your work. The idea is that publications can be copied and distributed more easily and/or that others can elaborate on them.
There are a number of different Creative Commons licenses. EUR mandates her researchers to opt for the CC-BY license when possible. Note that funders can also set requirements when it comes to licenses.
