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## above/below

The above and below options apply both to commands of the form

        plot f(x) with filledcurves {above|below} {y|r}=<val>

and to commands of the form

        plot DATA with filledcurves using 1:2:3 with filledcurves {above|below}

In either case the option limits the filled area to one side of the bounding line or curve.

Zooming a filled curve drawn from a datafile may produce empty or incorrect areas because gnuplot is clipping points and lines, and not areas.

If the values <x>, <y>, or <a> are outside the drawing boundary they are moved to the graph boundary. Then the actual fill area in the case of option xy=<x>,<y> will depend on xrange and yrange.