How to use cXML file?

Hi Experts,

We had a requirement for xml file to idoc.So I proposed a soltution that lets make it xml idoc(file) to idoc scenario and this is working.

So at source we are using idoc xml file for now.

But now the team wants to know if we can use cXML file at the source.I have never dealt with this ? not sure how to handle cXML.

Any one has any idea?