The OpenStack documentation uses several typesetting conventions. Notices take these forms: A handy tip or reminder. Something you must be aware of before proceeding. Critical information about the risk of data loss or security issues. $ prompt Any user, including the root user, can run commands that are prefixed with the $ prompt. # prompt The root user must run commands that are prefixed with the # prompt. You can also prefix these commands with the sudo command, if available, to run them.