If the value list's style is 'dropdown' or 'simple', only the first column is visible during the execution.
However, if the list has the 'droplist' style, several columns may be displayed, with graphical characteristics such as text color, alignment and frame.
If the text in the last column is truncated when the user scrolls through the value list, a tooltip showing the complete text is displayed.
Note: The COMBO_COLUMN object is not supported by the Java generator.