Reserved values for @rel and @rev

We have a list of reserved values for @rel and @rev defined in [1] and 
[2].  I would like to extend these values to include the 
"transformation" value that is defined in GRDDL [3], since the GRDDL 
folks have told the world that is the right way to specify a 
transformation for an XHTML document.  Any objections?

[1] http://www.w3.org/MarkUp/2007/ED-rdfa-syntax-20071018/#sec_9.2.6.
[2] 
http://www.w3.org/MarkUp/2007/ED-xhtml2-20071024/mod-metaAttributes.html#col_Metainformation
[3] http://www.w3.org/TR/2007/REC-grddl-20070911/#grddl-xhtml

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Shane P. McCarron                          Phone: +1 763 786-8160 x120
Managing Director                            Fax: +1 763 786-8180
ApTest Minnesota                            Inet: shane@aptest.com