Data Dictionary for UBL 1.0

[Philip Bradley <philb@vodafone.ie>]

Hi,

I've looked through the last year or so of archives and I can't see any 
mention of this. Does anyone know of a data dictionary that explains the UBL 
schema? Obviously, many of the elements are self explanatory but some 
elements and relationships are non-obvious.  Failing this, I think a similar 
document for CCTS would be useful. Any suggestions? 

Thanks, 
 -phil