Graphical interface buttons need to be sized so that they appear no smaller than 1/2 the width of the former oblong buttons, or of a diameter that is equal to the height of the former oblong buttons. This would be roughly equivalent to the diameter of the round buttons in the SM 2.0 browser "Modern" Theme.

Buttons also need to be placed far enough from dialog box or interface edges such that a user doesn't risk overshooting them while attempting to point and/or click with with consideration being given to the variety of user available pointing/input devices - including mice, trackballs, trackpads, pen tablets, and iso-static devices.

Buttons within ALL dialog boxes and/or other presentations furnished for user input/interaction need to be of a size which is both visually and tactilely accessible to/for all users of all abilities employing the widest variety of equipment, and should be evaluated at multiple screen resolutions on multiple size screens (smaller screens at high rezolutions representing worst cases) prior to final release of the software.

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     - Rufus
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