This post extends DTD issues

I have found an useful post about deterministics DTD here.

I have decided to leave the hard validation to a post XML-validation written in PHP (as sugested here). By the way Lukas had already told me to do this before.

The problems and their workarounds was:
P: <!ELEMENT create (#PCDATA | variable)>
S: <!ELEMENT create (#PCDATA | variable)*>