[xml] DTD's and xmllint

[Eric Ellsworth <whalesuit bonbon net>]

Hi,
        I'm working on creating an XML DTD, for the KDE usability project, as it 
happens, that I'd like to use validate documents using xmllint.

I'm having problems with CDATA elements.

When I run:
 xmllint --noout --valid embedded_ark_usability_test.xml

where embedded_ark_usability_test.xml looks like this:
--------------------------------------------------------------------------------------------------------------------------
<report date="2003-01-02">
  <author name="Eric Ellsworth" email="whalesuit softhome net"/>
  <application name="Konqueror" version="3.0.5-2"/>
  <os name="Linux" version="2.4.18"/>
  <interface name="KDE" version="3.0.5-1"/>
  <issue severity="medium">
    <description>Several sentences of severity text in this element.
        Sentences have whitespace of carriage returns and tabs between them
    </description>
    <reproduction>
      <step>A step goes here</step>
      <step>Another step in reproducing the problem goes here</step>
      <step>Yet another step</step>
    </reproduction>

    <solution>  The solution may also have similar whitespaces. 
                It too shows errors I don't understand.
      <rationale>
        The rationale field is CDATA inside an element.  Could this be a problem?       
      </rationale>
      </solution>
  </issue>
</report>
--------------------------------------------------------------------------------------------------------------------------
I get this kind of error many times:

embedded_ark_usability_test.xml:9: validity error: Element description content 
does not follow the DTD
Expecting (CDATA), got (CDATA)
    </description>
                       ^

embedded_ark_usability_test.xml:19: validity error: Element step content does 
not follow the DTD
Expecting (CDATA), got (CDATA)
<step>A step goes here</ste
                                         ^

I'm sure my question has a simple answer, but I can't figure out where to 
look.  Searches to this list didn't net me anything.  Any ideas or help would 
be much appreciated.

Thanks,

Eric

DTD follows.
--------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" ?>
<!ELEMENT report (author,application,os,interface,issue+)>
<!ATTLIST report date CDATA #IMPLIED>
<!ELEMENT author EMPTY>
<!ATTLIST author name CDATA #REQUIRED>
<!ATTLIST author email CDATA #REQUIRED>
<!ELEMENT application EMPTY>
<!ATTLIST application name CDATA #REQUIRED>
<!ATTLIST application version CDATA #REQUIRED>
<!ELEMENT os EMPTY>
<!ATTLIST os name CDATA #REQUIRED>
<!ATTLIST os version CDATA #IMPLIED>
<!ELEMENT interface EMPTY>
<!ATTLIST interface name CDATA #FIXED "KDE">
<!ATTLIST interface version CDATA #IMPLIED>

<!ELEMENT issue (description, reproduction?, solution+)>
<!ATTLIST issue severity (low|medium|high) "medium">
<!ATTLIST issue bug_reference_no CDATA #IMPLIED>

<!ELEMENT description (CDATA)>
<!ELEMENT reproduction (step+)>
<!ELEMENT step (CDATA)>
<!ELEMENT solution (CDATA|rationale)*>
<!ELEMENT rationale (CDATA)>
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