koan - 2:07 am on Feb 25, 2009 (gmt 0)

Windows traditional norms perhaps, but then so are talking paperclips and animated yellow puppies.

One application using these does not make it a norm. But hundreds of thousands of softwares using the cancel button to undo inadvertent changes is usually a good hint that it should be a requirement for modern, user friendly applications.

It's okay to borrow from the Windows world. Windows does it all the time.