Point P0
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Each definition of a elevation for the currently active axis starts with the definition of the point "P0". This point gets coordinates and a direction corresponding with the first real axis element. If "P0" is selected again to a later moment a straight line is created. If this straight have a different direction than the previous element at its end, an additional point element handling the rotation will be inserted.
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Line s
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A straight line is connected to the previous element. Either the station or station increment has to be entered.
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Line s-h
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A straight line is connected to the previous element. Either the station or the station increment and the absolute level has to be defined.
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Circle s-r
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The station (or station increment) and the radius define a new circle element.
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Circle s-h
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The station (or station increment) and the absolute level define a new circle element.
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Parabola s-h
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The station (or station increment) and the absolute level at the end of the parabola define a new parabola.
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Undo
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The current last element of the axis is deleted (can be repeated).
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Parabola-tangents
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The radius defines the rounding at the intersection point of two tangents.
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Parabola-polygon
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A Polygon, consistent of 3 lines, will be rounded by a parabola. The middle line has to be clicked.
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