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#### 15.8.5 Chart Attributes

Don’t use boxtype `FL_NO_BOX` for a chart object if it changes value.

Normally, for bar and line chart a baseline is drawn at 0. This can be switched on and off by the function

    void fl_set_chart_baseline(FL_OBJECT *ob, int yes_no);

The first color argument (`col1`) to `fl_set_object_color()` controls the (background) color of the box, the second (`col2`) the color of the baseline.