Editing XFA (section)

===Profiles===
Starting with XFA 2.5 forms can use a subset of the full XFA capability. Currently the only specified is the XFAF profile.

XFA can be used as: 
* '''''full'' XFA''' - which express all of the form, including boilerplate, directly in XFA (without any PDF or without a complete PDF background). It can be packaged inside a "shell PDF" with minimal PDF markup or as a standalone XDP. It is used for dynamic XFA forms (since XFA 2.1) and also for so called "traditional" (old-style) static XFA forms. Optionally it may include a pre-rendered depiction of the XFA form as PDF pages - but it is useful only for traditional static forms. Dynamic XFA must be rendered on file opening. 
* '''XFAF (XFA Foreground)''' subset - (introduced in XFA 2.5) - a form in which each page of the XFA form overlays a PDF background. It can be used only for static XFA forms. This architecture uses only a subset of XFA.<ref name="xfa25">{{citation |url=http://partners.adobe.com/public/developer/en/xml/xfa_spec_2_5.pdf |format=PDF |title=XML Forms Architecture (XFA) Specification Version 2.5 |date=2007-06-08 |access-date=2010-02-19}}</ref> It can be packaged inside a regular PDF document or as a standalone XDP file with embedded PDF. In XFAF each XFA field corresponds to a PDF interactive field (AcroForm field).