" Input: {
(data_uoa) - if specified use DTD file from that entry
(dtd_module_uoa) - if specified use DTD file from that entry, otherwise 'xml'
dtd_file - DTD file
xml_file - XML file to be validated
}
Output: {
return - return code = 0, if successfully validated
> 0, if error
(error) - error text if return > 0
}
"