#5 DTD error: doc element in constraint element wrong

[Dan Shellman]

When I loaded the existing I-Screen DTD into Oxygen XML (XML editor and authoring tool) I get a warning indicating that there is no <doc> element definition in the DTD.

To fix the problem please add the following line somewhere in the DTD:

<!ELEMENT doc (#PCDATA)>

The exact error message I get is:

W [Xerces] The content model of element "constraint" refers to the undeclared element "doc".