rem: messenger.Undo(msgWindow); 
add: messenger.undo(msgWindow); 
context: function Undo(){    messenger.Undo(msgWindow);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/0d4059c32bb899b0b564e88da3b2dd8cd4e4a21e/commandglue.js/buggy/mail/base/content/commandglue.js