Editing Mouse chording (section)

==Limitations==
Like [[mouse gestures]], chorded actions may lack feedback and [[affordance]] and would therefore offer no way for users to discover possible chords without reference. A similar feature such as a [[context menu]] would require less training.

When [[Project Athena]] used equipment from both [[IBM]] and [[Digital Equipment Corporation|DEC]], DEC mice had three buttons and IBM mice had two. Athena simulated the third (middle) button on IBM mice by chording the two buttons together.<ref name="garfinkel19881112">{{cite news | url=http://simson.net/clips/1989/1989.TechRev.Athena.pdf | title=A Second Wind for Athena | work=[[Technology Review]] | date=November–December 1988 | accessdate=25 January 2016 | author=Garfinkel, Simson L. | author-link=Simson Garfinkel}}</ref> This does not enable chords which involve the middle click. The [[Apple Mighty Mouse]] does not support mouse chording due to the design of the button sensors.