404. That’s an error.
The requested URL /bookmarks/mark?op=edit&output=popup&bkmk=http%3A%2F%2Fwww.r-x0.com%2Fvb%2Fr-x018684&title=%26%2359119%3B%95%26%23776%3B%26%23804%3B%26%23775%3B%26%23803%3B%7C%26%239484%3B%26%239480%3B%95%2F%26%23350%3B%26%231084%3B%26%23776%3B%26%23804%3B%26%23414%3B%26%23436%3B+%26%231103%3B%26%23776%3B%26%23804%3B%26%23963%3B%26%23963%3B%26%23950%3B%26%23784%3B%26%23823%3B%26%23824%3B%26%23408%3B+%95%26%239480%3B%26%239488%3B%7C%95%26%23776%3B%26%23804%3B%26%23775%3B%26%23803%3B%26%2359119%3B+%91%2C+%26%239829%3B+%FE
was not found on this server. That’s all we know.