/COMMENTS
       /NOCOMMENTS

    When /COMMENTS is specified, comment fields associated with each
    subscribed address will also be returned. Specify /NOCOMMENTS
    to have these fields stripped from the listing sent to you.
    The default behavior can vary from list to list. Generally the
    default behavior is to include the comments.

    Note that in RFC 822 addresses, comments are completely
    superfluous and it should be possible to strip any or all
    comments from an address without breaking the address. However,
    there are known to be mailers which stupidly put critical
    information into comment fields with the expectation that the
    comments will not be stripped or altered. Addresses for such
    mailers can be rendered unreplyable by removing the comment
    fields from them.