XFA Specification
Chapter 21, XDP Specification
XDP Reference
795
The xfdf Element (an XDP Packet)
The xfdf (annotations) packet encloses collaboration annotations placed upon a PDF document. PDF
annotations are converted into XFDF following the rules described in Adobe XFDF format [XFDF].
<xfdf xmlns="http://ns.adobe.com/xfdf/"
xml:space="preserve">
…
</xfdf>
The xfdf MIME-type is @@tbd.
The xmpmeta Element (an XDP Packet)
An XMP packet contains XML representation of PDF metadata. Such metadata includes information about
the document and its contents, such as the author's name and keywords, that can be used by search
utilities. XMP is described in the XMP Specification
[XMPMeta].
<xmpmeta
xmlns="http://ns.adobe.com/xmpmeta/"
xml:space="preserve">
…
</xmpmeta>
The xmpmeta MIME-type is
application/rdf+xml
.