[Serna] Lib used for xml parsing?

Hello,

I'm currently evaluating the use of both Syntext Serna for the use in one of 
our projects. Besides the normal functionalities that I can test, there is one
evaluation parameter that I cannot seem to infer/discover.

Basically, it is important to us to know which xml parser/validator the chosen 
Xml Editor will use. This parameter is important because requirements force us 
to use a different library for programmatically parsing xml files and for xml
edition.

So, is it possible to know which parser/validator Syntex Serna use? If, by 
some reason you cannot provide us with that knowledge, is it at least possible 
to know if one of these parsers used is either Xerces or LibXml (and which one)?

Best regards and thanks in advance,
Sérgio Lopes