In article <1183310598.504725.29160@n...>,
seven.reeds <seven.reeds@g...> wrote:

><!ELEMENT article (title, image*, text+)>
><!ELEMENT title   (#PCDATA)>
><!ELEMENT image   (src, width?, height?, link?)>
>    <!ATTLIST src    CDATA #REQUIRED>
>    <!ATTLIST link   CDATA #IMPLIED>
>    <!ATTLIST width  PCDATA #IMPLIED>
>    <!ATTLIST height PCDATA #IMPLIED>

Are src, link, width and height subelements or attributes?
You've listed them as child elements in the content model, and
then declared them as attributes.

You seem to be using attributes, so declare image as

  <!ELEMENT image EMPTY>

And you've declared width and height as PCDATA which doesn't mean
anything; presumably you meant CDATA.

><!ELEMENT text    (#CDATA)>

And here you've declared the content of text to be #CDATA, presumably
you meant #PCDATA.

>A sample xml doc looks like
>
><?xml version="1.0" ?>
><!DOCTYPE article SYSTEM "http://www.itg.uiuc.edu/publications/news/
>news.dtd">
><article>
>  <title> Applied Physics Letters Features ITG Image on Cover </title>
>  <image link="http://scitation.aip.org/dbt/dbt.jsp?
>KEY=APPLAB&Volume=90&Issue=21"

All your ampersands need to be replaced with &amp;

>    src="/images/apl_cover-130.jpg" />
>  <text> The cover for the <a href="http://scitation.aip.org/dbt/
>dbt.jsp?KEY=APPLAB&Volume=90&Issue=21">May

Your dtd doesn't say anything about <text> being allowed to contain
<a> elements.  You'll need to change the declaration of text and add
a declaration for a.

>My XML parser chokes on the first "&" (ampersand) in the "link"
>attribute of the "image" tag.  I know that being "well-formed" means
>the amps should be "quoted" but I thought that the "CDATA bits in the
>DTD meant that *ALL* characters are accepted in this context.

A CDATA marked section in text, such as <![CDATA[hello & goodbye]]>
has that effect.  In attributes (whether declared as CDATA or something
else) you have to quote ampersands.  There's no way around it.

The CDATA/PCDATA terminology is certainly confusing.

-- Richard
-- 
"Consideration shall be given to the need for as many as 32 characters
in some alphabets" - X3.4, 1963.