Askia surveys can be designed with XML. The XSD (that is the XML file that defines the Askia XML file) is a work in progress. But we have attached it here so you can validate your document before you try to create an Askia survey.
There is also a documentation of this XML document automatically generated from the xsd using x3sp.
And we also have attached a standard export of the Ex.qes demo survey into XML.
Download the Askia.xsd file
Download the attached Ex.xml file to view.