While viewing the screen you want to capture, drag the Status Bar downward, then tap the Capture+ icon .
Select the desired tool from the toolbar (Pen type, Color, and Eraser). Then create a memo using a fingertip to draw or erase pen marks (don't use your fingernail or any other rigid object).
Tap the Save icon to save the memo or tap the Back Button to exit at anytime without saving it.
Tap the toolbar handle (at the top of the screen) to display or hide the Capture+ toolbar options.