How can I call mandatory part of XML.....

From: TeX United Group Gad <mamidogad@gmail.com> Date: Wed, 14 Mar 2007 14:06:18 +0200 Message-ID: <b66d89600703140506x5d95af91of59d4b3aba020a78@mail.gmail.com> To: xmlschema-dev@w3.org · This archive was generated by hypermail 2.2.0+W3C-0.50 : Wednesday, 14 March 2007 20:47:51 GMT

Dear Sir;

How can I call mandatory part of XML from other path and acheive validation
process
at the same time.

My full XML is divided to three parts (front, body, and back) how can I call
the front and back
from other path, e.g.,

<?xml version="1.0"?>
<!DOCTYPE  article PUBLIC "-//NLM//DTD Journal Publishing DTD
v2.120050630//EN" "
journalpublishing.dtd">

<input link="front.xml"/>

<body>
<sec>
<p>
</p>
</sec>........
.......
</body>

<input link="back.xml"/>

Thanks