redbutton = Button ("redbutton", "Red", 800, 300, true);

greenbutton = Button ("greenbutton", "Green", 900, 300, true);

bluebutton = Button ("bluebutton", "Blue", 1000, 300, true);

## red line

Linered is Line(x, y, redX, redY, "red");
redX=0;
redY=0;

## green line

greenX=0;
greenY=0;

Linegreen is Line(redX, redY, greenX, greenY, "green");

## blue line ONLY

Lineblue is Line(x,y,greenX,greenY,"blue");