1-Highlight the offensive posting.
2-On the "message" tab, click "block sender".

A pop-up will ask if you wish to remove all of the sender's posts from
display; clicking yes will remove those posts. In either case, the
sender's new posts will no longer appear.

Posts are blocked by posting address. Some posters may change posting addys
to avoid filters, merely repeat the process (1-2) for new addresses.

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*** To REMOVE a poster from a kill-file, click tools/ message rules/
blocked senders list and highlight that poster, then click "remove".