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path<-segment
path <-segment: near=point|event, accept=[0..] -> point
Return member point that is the start of a line-segment nearest to the indicated position or event graphical<-position. May be used to interactively path->insert new points: 
send(Path, click_gesture(left, '', single,
                         message(@receiver, insert,
                                 ?(@event, position, @receiver?device),
                                 ?(@receiver, segment, @event)))).

See also path<-point.

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