Up here will be the equation for the equilibrium system you will be studying.
Down here will be:
(1) The picture of the original reaction mixture (in the middle) before any stress is applied.
(2) The stresses you can apply:
means heating the solution
means cooling the solution
means adding a chemical (in this case KCl)
When you apply the stress by clicking on the image, another picture will come up. On the left of the picture will be the original solution. On the right will be the solution after the stress has been applied.