**''blacklist'': A list of users who are banned from the server. These users can still attend meetings which allow guests if they have been given the Guest URL.

***'''username''': String. One user's user ID to ban from the server. A <blacklist> node can contain multiple <username> nodes.

**''courseList'': A list of course codes to make available to users creating Lectures.

***'''course''': String. A course code. A <courseList> node can contain multiple <course> nodes.