The name of a field in the list specified in the listname property that can contain an additional value to be tagged onto a list item. This value is added as an attribute with the name of the field prefixed with 'tag_'. This attribute can then be specified in JavaScript code.
Default value
Blank.
Valid values
Single-quoted text. A field, from the working list nominated in listname, can be selected by clicking the corresponding dropdown button in the property sheet.