There are four sequences to choose from.

• Zoom in or out, by pressing the appropriate buttons.
• Choose the sequence from the list.
• Choose the function from the list.
• Press 'Show sequences' to plot the next 20 terms of the sequence along with the image under the current function.
• The red dot in the left picture is the limit of the current sequence and the red dot in the right picture is the image of that limit.