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<td><font face="Times">If the <b>free</b> method is not part of the protocol that the delegate responds to, this message simply frees the checker.&nbsp; If the <b>free </b>method is part of the protocol that the delegate responds to, the <b>free</b> message is forwarded to the delegate, and the checker is freed if the delegate returns <b>nil</b>.&nbsp; This ensures that that the checker is closely coupled to the delegate whether the delegate implement