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Anonymous Poster #1

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09/28/2014 10:26 PM

In Trapazoidial thereds 4S &5S what is the meaning of S?
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lyn
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Re: THREDS

09/28/2014 10:39 PM

Speed.
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Tornado
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Re: THREDS

09/28/2014 10:40 PM

Possibly "starts", which were formerly called "leads", and designated as 2L, 3L, etc.

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