ui.ComboBox.getTag
Get the combobox tag value.
Syntax
getTag()
  RETURNS STRINGUsage
The getTag() method returns the value define by the
   TAG attribute.
Use the tag to mark COMBOBOX form items with your own flags, in
   order to adapt the configuration of the combobox dynamically by program. For
   example, if TAG contains the token "short", fill the drop down list
   with short names, otherwise fill with long names. The same code can then be used for
   different COMBOBOX form fields.