*** New methods for: Grail (browse-url-generic), MMM (browse-url-mmm),
Lynx in a separate xterm (browse-url-lynx-xterm) or in an Emacs window
(browse-url-lynx-emacs), remote W3 (browse-url-w3-gnudoit), generic
non-remote-controlled browsers (browse-url-generic) and associated
customization variables.