The canvas window is the place where you build a model. In addition to commands available in the Menu Bar and the toolbars, you can right click (CTRL click on a Macintosh) on the canvas or on a selected element in the canvas to access a popup menu customized to your selection.
During simulation, the canvas window is updated with entity value changes. In some simulation modes, processes that fire are marked with color and animated tokens move between entities.
You can customize the background color and other properties of your canvas windows by editing the Canvas section of the application global settings in the Preferences dialog. Simulation visualization options are defined in the Animation Options section.