Changes

|style="width: 50%;|Step 5- we indicate what variables the plot will graph. By double clicking plot within the Tree of Elements, a new window pops up. Fill the Input X and Input Y fields with t and x respectively. To help differentiate the two populations, edit the Line Color parameter to be BLUE. Next we add a plot of the predator versus time by right-clicking the plot just edited and selecting Copy from the popup menu. Then right-click the plottingPanel element and select Paste. Edit the plot2 element so that Input Y is y. 

|style="width: 50%;|Step 5- we indicate what variables the plot will graph. By double clicking plot within the Tree of Elements, a new window pops up. Fill the Input X and Input Y fields with t and x respectively. To help differentiate the two populations, edit the Line Color parameter to be BLUE. Next we add a plot of the predator versus time by right-clicking the plot just edited and selecting Copy from the popup menu. Then right-click the plottingPanel element and select Paste. Edit the plot2 element so that Input Y is y. 

|style="width: 50%;|Step 6- In those short steps, a complete simulations is ready for use. Indeed, it is easy to visualize such a model with EJS. To see your resulting work, click the green triangle on the right side of the main window to launch and see the application.

|style="width: 50%;|Step 6- In those short steps, a complete simulations is ready for use. Indeed, it is easy to visualize such a model with EJS. To see your resulting work, click the green triangle on the right side of the main window to launch and see the application.

==File formats for creation==

==File formats for creation==