You can add shape annotations in the form of straight or free-form lines, squares or rectangles, and circles or ovals.

1. On the toolbar, tap .
   The annotation toolbar appears on the right side of the screen.
2. Tap the desired annotation tool button:
   • Tap  to draw a straight line.
   • Tap  to draw a circle or oval.
   • Tap  to draw a square or rectangle.
   • Tap  to draw a free-from line.
   • Tap  to check the color density of a specific area of an image.