The XML Events 2 document is a W3C Editors' Note, authored by Shane McCarron of Applied Testing and Technology, Inc., and Mark Birbeck. It provides a way to specify event listeners and handlers for a document, using XML mark-up.
From the abstract:
The XML Events module defined in this specification provides XML languages with the ability to uniformly integrate event listeners and associated event handlers with Document Object Model (DOM) Level 2 event interfaces. The result is to provide an interoperable way of associating behaviors with document- level markup.