This information has been compiled by CBOE for general information purposes only, and therefore should not be considered complete or precise. Most matters discussed are subject to detailed exchange rules and to the discretion of exchange officials. The rules of the various exchanges are subject to change and may not be reflected in this information. CBOE assumes no responsibility for any errors or omissions in the information presented. In addition, this circular does not address specialized circumstances, such as the times that would be applicable on days when one or more underlying equity markets is scheduled to close trading earlier than normal or the rules applicable to Chapter 30 securities. These specialized matters are covered in detail by exchange rules.