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xmldtddtd-parsing

How to know if a DTD is validated or correct?

I have an example of DTD script here, and I was wondering if they are valid, are there any online validator for DTD? 

<!ELEMENT A (B* |C+,D)>
<ATTLIST A
    AA CDATA #REQUIRED
    AB CDATA #REQUIRED
    AC(0|1|2) #REQUIRED
>
<!ELEMENT B EMPTY>
<!ATTLIST C(B)>

And Another Question. in the line 

 !ELEMENT B EMPTY>
    <!ATTLIST C(B)>

What does that actually mean? can any one provide example?

And this A (B* |C+,D)

Solution

  • Try this XML DTD validator (dead link removed).