...and this is how it works. At first, the request seemed silly - there's a keyboard command. After she explained how she works, it make a lot more sense...AGO keyboard remote from the computer, with a wireless mouse. Of course! An undo button would be helpful under those circumstances.
And the mighty Cakewalk said, "Behold! For there is now a button you can access from your wireless mouse! Go forth and undo!" And undo was done.