KEYCODE = LISTofKEYSYM Sets a row in the keycode-to-keysym table that X applications use to convert keycodes into keysyms The list of keysyms can contain 0, 1, 2, 3, or 4 keysyms Keycodes must be in a range of 8 to 254
A code put on a response coupon or similar to identify where the response came from For example a newspaper campaign will have Keycodes on a coupon which shows which paper generated the reply In the case of Direct Mail, the Keycode could show the list (see entry) source or the exact offer or design of the mailing material In all cases, the Keycode enables analysis to show which campaign works best