What is the subject line for this email?

On Wednesday, October 31, I sent an email to all Enron employees worldwide in order to ensure that Enron employees retained documents that might be relevant to ongoing litigation. New lawsuits have been filed that enlarge the scope of the information that Enron will need to retain. The following list includes both the topics in the earlier email and the topics related to the new lawsuits.

Subject Line:
Important Announcement Regarding Document Preservation.