When you access the Canvas view initially, the page is in view mode and no objects are displayed. To create objects in the Canvas view, you must first change to edit mode, set up the objects that you want displayed in the view, and then after you have set up the objects, return to view mode to monitor the object status.
Click the Preferences button in the toolbar.
The view is changed to edit mode, and the Canvas view Preferences dialog box is displayed in the Canvas view pane.
To return to view mode, close the Canvas view Preferences dialog box.
For more information about setting up the Canvas view, see Using edit mode to set up the Canvas view .
For more information about using the Canvas view to monitor objects, see Using view mode to monitor objects in the Canvas view