(:name yank-pop-summary
       :website "http://www.namazu.org/~tsuchiya/elisp/index.html"
       :description "yank pop forward and backward preview."
       :type http
       :prepare (progn
                  (autoload 'yank-pop-forward "yank-pop-summary" nil t)
                  (autoload 'yank-pop-backward "yank-pop-summary" nil t)
                  (global-set-key (kbd "M-y") 'yank-pop-forward)
                  (global-set-key (kbd "C-M-y") 'yank-pop-backward))
       :url "http://www.namazu.org/~tsuchiya/elisp/yank-pop-summary.el")