How to use standalone tag in Datamapper client for XIB 211? i.e. the xml map should have the follwoing:

<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>

You need to use the maincode, to determine if the output file has been written, read it again, and write it again, but filter the header, and put your own header there. This will get allow you to add standalone tag in xml maps.