# 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)

Plot a straight line from point to point.

Plot a smooth line through the points.

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

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