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Old 16th July 2017, 11:42 PM   #7
A. G. Maisey
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Join Date: May 2006
Posts: 6,991
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Yes, your logic on naming sounds correct to me Fernando.

The push-button mechanism as "clutch-pencil" I'm pretty certain of because I have used one in drawing flowcharts during much of my life. One could say it is one of my tools of trade.
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