CWT 104 and CWT Compact Classic use the same kind of key mapping as the CWT 2110 and CWT 2115 where Id numbers of physical buttons are mapped to a click action handler.
CWT 104 and CWT Compact Classic are only equipped with 4 or 5 buttons positioned on the lower part of the cabinet door. Because the buttons are not placed on the side of the display the buttons have to be defined by Stn:KeyboardButton tag in each display panel. Otherwise if Stn:Button is used the button text and background rectangle will be rendered to the display for all buttons.
Even if CWT 104 and CWT Compact Classic do not have any buttons on the sides of the display the software uses the ButtonLocation property to map buttons from the keyboard map into the currently visible panel.