XForms 2.0: dispatch/property

1. dispatch/property isn't mentioned in
http://www.w3.org/MarkUp/Forms/wiki/XForms_2.0#Differences_between_XForms_2.0_and_XForms_1.1

2. What is the data type of the name?  Is it xsd:string and subject to AVT?
http://www.w3.org/MarkUp/Forms/specs/XForms1.2/modules/xpath20/index-all.html#fn-event

BTW the #differences section maybe should mention the XPath 2.0 and 
Dialog modules.

Leigh.