> I believe there is no straightforward way to specify this,
I think you can do this (dtd syntax) although whether or not that is
straightforward I leave for others to judge. (If I got this wrong, which
is possible, something not unlike this will do you what you want.
optional_element2*,
(
(required_element,optional_element2*,(optional_element1,optional_element2*)?) |
(optional_element1,optional_element2*, required_element,optional_element2* )
)
obligatory comment that it's all so much easier in relax ng:-)
David
________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________
