1. ALERTING:

• On BBO the person who makes a bid alerts the bid.
• There is a line available to describe the bid prior to actually selecting your bid. 
• Your partner cannot see the alert.
• Please use this facility.

2. UNDO's;

• This is available on the top left of your bridge 'table'.
• Please use this immediately you have bid incorrectly - not after 3 people have bid.

3. CLAIM:

• Once you are certain that you have all the rest of the tricks please claim.
• If you have all but a couple of tricks you can claim the number you will make.
• Please use this facility.
• Opponents please look at the hands and accept or reject the claim sensibly.