At the request of Member Firms, the CME will implement a change to the GUS system effective at the start of business, Friday, September 1, 2000. This change will not allow price edits detected in our trade editing process to pass through to GUS, until the price edit is corrected.

This change will not affect the method of submitting a GUS trade or change the functionality of the GUS screens.

Firms will notice additional information being displayed in the detail screen associated with the Trade Inquiry Update screens in TES. It will display a �GU� indicator and the carry firm number in the �F EX/FRM:� field. This information is for viewing purposes only and cannot be changed by the user.

If you have any questions, please call Farris Oweimrin at 312-648-4780 or e-mail at foweimri@cme.com

Thank you!