Using the Graphics Editor SECTION 2 Basic Tutorial 3. Now the variable, or 'Point', can be defined to control the traffic signal; in this instance a simple Boolean point is used. 4. In the Point Name field, type "GO", as the name of the point. 5. Check that the Point Type is "Boolean" and that "Memory" is selected as the I/O Type. 6. Click the OK button. The point is added to the points database. 2-5-2 Adding the toggle button As this is a simulation to see the application in action we need a means of changing the value of our new point "GO". The simplest method is to use a "Toggle button", a two-state button which changes from one state to the other each time the button is pressed. 1, 2, 3…
1. From the Graphic Object toolbar, click the button and draw a button of a suitable size in relation to the traffic signal 2. Double-click on the newly-created Toggle button to open the Toggle Button Wizard dialog box. 16