Prince processes well-formed XML 1.0 documents with full support for namespaces, internal and external entities, DTDs, character references and CDATA sections. Comments and processing instructions are ignored and do not affect the output.
Validation
Prince loads DTD files in order to resolve entity definitions and default attribute values. However, Prince does not perform validation upon input documents. If validation is a processing requirement, the use of an external validator is recommended.
xml:lang
Prince supports the xml:lang attribute, which is used to
indicate the language of the document text. Elements can be selected by
language using the CSS :lang() selector.
xml:id
Prince supports the xml:id attribute, which is used to give
elements a unique identifier. This identifier can be used when creating
links and cross-references; it also allows elements to be selected
using the CSS ID selector.
xml:base
Prince does not support the xml:base attribute, therefore
hyperlinks must be absolute URLs or relative to the document path.
XLink
Prince supports simple XLinks and will treat any element containing a
href attribute in the XLink namespace as a link.