 When you follow the link in this learning activity you should come to a page like this which is the interface to our model So it's pretty simple. There's some buttons. You can click here and so there's a graph here. There are several graph Layers here. You click on this and you'll see there's page two. We'll go back to page one here There's a little thing up here Which is a little slider control that you can move back and forth and you can Return it to its original setting by hitting that you there So here's a little representation of the model diagram. This should look familiar from the learning activity itself it just shows what's behind the scenes here and R of course is that if you go back to here R is that Production rate constant here that that's essentially like the fraction of the proven reserves. It's produced During each time period kind of like the percentage of it, right and then the production which is graphed here is the You know portion of that those proven reserves that are produced on this next page here page two we show The proven reserves in red and then the produced oil that's made by you know drilling and developing produce that oil there So you could hit run here Run the model and there you go You see sure enough proven reserves starts off at a hundred and it drops down to practically nothing after 200 Years here produced oil. It's just the inverse of that it rises up here You notice that as I move the cursor along here that those curves It's telling me the time and the value of produced oil a shift on here to prove proven reserves It does the same thing for that parameter here and go back to the other page Here's the production once again, you can track the amount of Production versus time here in some detail by moving your cursor there So this is this is the typical interface here You know there are buttons you can push that will activate different things you can run it You can stop it. You can't really break it and if you want to reset things you just hit the refresh button of your browser and you'll get the Pristine version of the model if you've done something strange you want to undo it you just can reset that