This spec describes concatenation of node sequences such that they are parseable as entities.

In the case you describe I think that fits well.
Atleast in my reading

5 XML Output Method

This describes serializing a sequence of nodes.  I think this spec would fit for your use case.
Atleast that is my read, I admit I have a hard time following the reading of this spec (not to blame the authors, I just have a hard time understanding it all)


 

I agree. The existing W3C serialization is intended for this use case and is regularly used in this way. (Though perhaps the HTML output method is more suitable than the XML output method.) This requirement is out of scope for this project, which needs to retain information present in the XDM that the existing serialization methods throw away.

 

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay