This article is from the Bicycles FAQ, by Mike Iglesias with numerous contributions by others.
From: Jobst Brandt <jobst.brandt@stanfordalumni.org>
Date: Fri, 17 Oct 1997 10:00:05 PDT
_____________ _________ */ \* */ \* */ \* *| |* */ \* *| |* */ \* *| |* *| |* _________*|__________/* *| |* */ *| *| |* *| *| push--> *| pull & turn <-- |* *| *| *| |* *| *| *| |* *\_________*|__________ *| |* *| \* *\ /* *| |* *\ /* *| |* *\ /* *| |* *\_____________/* (*)tread *\_________/*
 
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