"fieldname" | The name of a Data form field | required |
topic="..." | Topic where form data is located. May be of the form Web.TopicName | Current topic |
format="..." | Format string. $value expands to the field value, and $name expands to the field name, $title to the field title, $form to the name of the form the field is in. The standard format tokens are also expanded. | "$value" |
default="..." | Text shown when no value is defined for the field | "" |
alttext="..." | Text shown when field is not found in the form | "" |