As a follow up to my previous message asking about X-Tags, these are my more specific questions. The only reference I could find to an explanation of the X-Tags in the manual is: X-Tags= Comment | Yes | No Indicates whether "X-To:" and "X-cc:" tags are to be included in the output mail files to list recipients of the original mail file (other than the list userid) or not, and how they should appear in the RFC822 header. Yes: This information must be provided in the form of "X-To:" and "X-cc:" tags in the RFC822 header (similar to the "To:" and "cc:" tags). This is the default. Comment: This information must be provided in the form of "Comment:" tags, i.e. "Comment: X-To:" and "Comment: X-cc:". No: This information must not appear at all in the mail header. Questions: 1) First paragraph of above. What are the "output mail files to list recipients of the original mail file"? Does this mean the messages that go out from listserv to the list recipients? If so, does that mean that the X-tags would be included in the message that is archived or not? 2) What does "not included" mean? Does it mean that listserv removes these lines from the message header? That's what it sounds like until I read "must not appear at all" which sounds like listserv would not process messages with these tags in the header. 3) The list header has two values for X-tags - Yes Yes. Is one for the X-To and the other for the X-cc? 4) In general, what is the purpose of these settings? I'm reluctant to test without understanding these setting better and would greatly appreciate any help. Paula Ford