Is there a DTD for XPage source?

Question

With whatever little knowledge I have of XML I know that we can associate a DTD with XML file which defines all the valid elements, its attributes and where they can appear.

Is there any such DTD associated with XPage source code defining all the elements and its attributes? Where does it define tags like xp:view, xp:panel, xp:button and so on along with its associated properties? So I am looking for a file with content something like <!ELEMENT xp:panel ......>

Answer 1

No There is not a DTD for xpages source as anyone can add there own tags through an extension library.