+(defun gnus-request-set-mark (group action)
+ "Set marks on articles in the backend."
+ (let ((gnus-command-method (gnus-find-method-for-group group)))
+ (if (not (gnus-check-backend-function
+ 'request-set-mark (car gnus-command-method)))
+ action
+ (funcall (gnus-get-function gnus-command-method 'request-set-mark)
+ (gnus-group-real-name group) action
+ (nth 1 gnus-command-method)))))
+