Crossmark, is a service from Crossref, which gives readers quick and easy access to the current status of a piece of content. With one click, you can see if content has been updated, corrected or retracted and access valuable additional metadata provided by the publisher. This webinar will offer a brief introduction to Crossmark, an overview of how publishers can participate, and a look at the latest updates and changes: -Crossmark 2.0 -The look and functionality of the pop-up box (Webinar was held on February 23, 2017)