Open Stack

When I submitted a talk I seem to remember there was a way to include external references such as links to repositories, blog posts, or documentation that would provide more context about the technology being presented. While going through the talks I noticed that that section doesn't seem to be visible in the track chairs application. It would be really helpful to have that section, as it's sometimes hard to tell if the technology the speakers want to discuss is proprietary software or a new open source project. Is this an oversight, or did I misremember having that section available?

Colleen