>slower at 50mS. (thats milli-seconds). Can you press a key and release it >that fast? Maybe, if you tried. Are you likely to press it that fast in >normal use? Not likely. Consider what 50mS means. The frequency is >1/50mS, FYI humans with suitable training can actuate very normal keys for <1msec. They do not succeed every time, but they try hard and repeatedly. Especially if it is some kind of a contest or if there is something to be gained (or to be lost by some other party). (Hint: The proper stroke for this is sometimes called 'tangent whack', using one or more fingers. I think it is called flick somewhere else). Peter -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics