Ideally, OER provides all 5 of these values.
- Retain: Users have the right to make, archive, and "own" copies of the content;
- Reuse: Content can be reused in its unaltered form;
- Revise: Content can be adapted, adjusted, modified or altered;
Remix: The original or revised content can be combined with other content to create something new;
Redistribute: Copies of the content can be shared with others in its original, revised or remixed form.
Retention can have a surprisingly strong effect, especially for students who normally can not markup and retain their text from year to year.