# Working with the DWO » The graph-draw-tool

The graph-draw-tool looks like this.

If the graph-draw-tool is underneath a coordinate system, you can plot graphs yourself.

The buttons have the following functions:

Plot points in the coordinate system.

Remove points from the coordinate system.

Move points in the coordinate system.

Show only points (no graph)

Plots a straight line from point to point.

Plots a smooth line through the points.

Plots a smooth line through the points which is extrapolated.

You can select Graph 2 and Graph 3 with this drop-down list. This way you can plot (or change) a green (Graph 2) and a red (Graph 3) graph.

Deletes everything of the colour which is selected with the drop-down list from the coordinate system.

**On a tablet this often works faster than using the eraser or mouse pointer to change the graph!**