This page is part of the web mail archives of SRFI 62 from before July 7th, 2015. The new archives for SRFI 62 contain all messages, not just those from before July 7th, 2015.
As a last minute 2-cent thought, wonder if it may be better to use a symbol more closely already associated with reader list element modification such as @; to delete/comment-out an element, as @, evaluates/expands elements, rather than introduce one beginning with a # ? (but just a thought).