http://blogs.msdn.com/b/infopath/archive/2004/03/26/96987.aspxWith InfoPath 2003 SP1 , there is a new schema for the form definition (.xsf) file, to match the features added to InfoPath. There will be a documented roll-out of this schema, along with other InfoPath technical information, when the SP1 is officiallyen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/infopath/archive/2004/03/26/96987.aspx#96990Fri, 26 Mar 2004 22:08:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:96990InfoPath Team Blog<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=96990" width="1" height="1">