Annotating your PDF
Press the drawing icon.
Select a drawing color from the drop down. Use the slider to set the size of the pen.
Draw with your finger. You can also use 2 fingers to pan and zoom around the document. In general zooming in and drawing slowly will produce the smoothest results.
Assign colors to the radio buttons. You can program 3 colors for instant use at any time. Select a drawing color, then press and hold on a radio button for more than 3 seconds. Lift up and the radio button will become the color of the current drawing selection. Repeat for the other 2 buttons. Press the button to recall the drawing color.
You can use the forward and back buttons to turn between pages when you are in draw mode.