Display Working Canvas

The app opens to a blank canvas with drawing controls on the left and other controls above the canvas.
Force a new clean canvas, open an existing canvas, or save the current canvas using the associated file button in the top left.
Zoom in and out of the canvas using the Zoom buttons or by using pinch and expand gestures on the iPad.
Show or hide the drawing guides by toggling the Show Guides/Hide Guides button. Note that the guides are not saved in the final PDF whether or not they are displayed while drawing.