For wide project or OEM project with ignition a added value feature will be the possibility to create or modify via import/export a windows and these components thru an xml format.
Windows can already be exported and imported, which uses an XML format. Is this not what you’re talking about? 
yes,
but with the functionexport, all the data in the .proj file are binary (<![CDATA … ]]>)
not possible to edit.
When we do a ctrl-C with all component selected, an the past it in a notepad,
the xml provided seem to be manually editable !
But when we try to import the saved file witha .proj extension,
the message is :
org.xml.sax.SAXParseException: Content is not allowed in prolog.