Subject: " gnus-button-url-regexp 0 (>= gnus-button-browse-level 0) browse-url 0) ("[*:]+:" gnus-button- url-regexp 0 (>= gnus-button-browse-level 0) browse-url 0) ("*[*:]+:" "\\bmailto:\\([-a-z.@_+0- 9%=?&/]+\\)" 0 (>= gnus-button-message-level 0) gnus-url-mailto 1) ("*[*:]+:" "\W(<\\(url: \\)?\\ (nntp\\\news\\):\\([/>\n ]*\\)>\\)" 1 (>= gnus-button-message-level 0) gnus-button-message-id 4)) "*Alist of headers and regexps to match buttons in article heads. This alist is very similar to ‘gnus-button-alist', except that each alist has an additional HEADER element first in each entry: EFTA00503358