Sort:  

Thanks for your comment. It's a play on the sestina - usually there's six interlocking stanzas, the sixth being an envoi. Each end word from the final line rotates. The number 6 has some connotations I don't like, seven is a much kinder number. Thanks again. CC

Ah, yes, it's clear to me now! I didn't get it at first. Very interesting. And, again, excellent poem.