tutorial

How to...Build a ModelDouble click on the STELLA icon. When the full screen appears, clickon the icon of the world once. It should change to an . The top barlooks like this:This is the source of the icons we will use to build our model. First click on theicon that looks like this : . This is known as a stock. Now slide your pointerout into the open field and click again. A large stock should appear with theword Noname 1 highlighted. Before doing anything else, type the name ofthe quantity that the stock represents (eg. money)Now click on the icon which looks like this: . This is a flow. Slide yourpointer to a position some distance to the left of the stock, click and draguntil the arrow just touches the stock and the stock becomes shaded. Let go ofthe mouse button. A flow pointing into the stock represents the rate at whichthe stock is being changed by the addition of a quantity over time (eg. weeklyearnings). Your diagram might look like this:Suppose you spend part of your money each week. To show the weeklyexpenditures, use a flow that points away from the stock to indicatesubtraction. To do this, click on the flow icon, place the flow icon inside thestock, then click and drag the flow to the right of the stock. Your diagram mightlook like this now:Hint: If the name of a stock or flow is placed so it is difficult to read, simplyselect the name with the mouse and drag it to a new position near the icon.-1-How to ... Enter Values and ...