[rules-users] Activation groups (xor-group)

Please could someone clarify exactly how activation-groups work. My understanding of them is that if a set of rules are all in the same activation group then only one of them will fire. Is this correct? In particular what happens if a rule becomes deactivated, can another rule in the same activation-group then fire? Thanks, Thomas ________________________________ This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmaster(a)nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. An NDS Group Limited company. www.nds.com