Click x and y to give the x and y position for your point. Click the check mark to plot the point. To remove a point, click the delete button. Any point you click will be deleted. Click it again when you're done so you don't accidentally delete points. Click the point to show its position. Make sure the delete button in black before you do this. You can connect points with line segments by clicking connect points and putting in the x and y positions of the points you want to connect. You can have a maximum of 300 points.
