Optional. Select one or more fields to send to the webroutine serving the list. You would normally nominate fields whose values will determine the content of the list. To select more than one field, press the Ctrl key while selecting additional field names.
The fields are sent to the webroutine serving the list but are not read back into the main webroutine. That is, the behavior is identical to having them mapped for input in the webroutine serving the list.
No default value.
Comma separated list of field names mapped for output in the current webroutine.