The OpenStack documentation uses several typesetting conventions. Notices take three forms: The information in a note is usually in the form of a handy tip or reminder. The information in an important notice is something you must be aware of before proceeding. The information in warnings is critical. Warnings provide additional information about risk of data loss or security issues. Commands prefixed with the # prompt are to be executed by the root user. These examples can also be executed by using the sudo command, if available. Commands prefixed with the $ prompt can be executed by any user, including root.