i am also not clear with (e.m_.....  ??
what does the e.m mean

Dim ptA As New On3dPoint(e.m_pointA(0))
Dim ptB As New On3dPoint(e.m_pointB(0))

and with

AddPointObject(ptB)
line.from = ptA
line.To = ptB
AddCurveObject(line)

thanx david for explanation

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