Issue with inclusion/exclusion lists

[parks]

So I'm having an issue with an inclusion list. The list does not seem to flow down to descendants of the element it is declared in.

Here is my example.

The dtd :

<!ELEMENT doc - o (element) +(inc1) >
<!ELEMENT element - o (sub-element) >
<!ELEMENT sub-element  - o (sub-sub-element) >
<!ELEMENT sub-sub-element  - o EMPTY >
<!ELEMENT inc1  - o EMPTY >

The sgml before saving :

<!DOCTYPE doc SYSTEM "C:\sgml\sgmldtd.dtd" []>
<doc>
   <element>
     <sub-element>
       <inc1>
       <sub-sub-element>
     </sub-element>
  </element>
</doc>

The xml after loading into an XmlDocument and saving :

<doc>
  <element>
    <sub-element>
    </sub-element>
  </element>
  <inc1 />
  <sub-sub-element />
</doc>

Because <inc1> is not included as per the <doc> inclusion list, it is not recognized and so it auto-closes all the elements and is no longer valid. Is this the expected behavior?

EDIT : I used a 1 instead of an L for <inc1>, which is confusing I know, but I was consistent.

[SteveB]

SgmlReader's support for DTD is very limited. The original author just made it understand enough to be able to read the HTML DTD. So your mileage will vary based on how sophisticated your DTD is.