xsl-fo issue

Hi,

Does anybody know how to embed the data such as text from
URL into xml?
I know that there is no xsl-fo tag to do that; however,
I have one idea to use entity showing below.

In dtd, 
  <!ENTITY urltext SYSTEM "URL">
In xml,
  <url>&urltext;</url>

This idea is not too bad, but I want to write some tags in
stylesheet not in dtd.

Any idea will be appreciated!

Thanks in advance

Ryoko


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