Now, auto layout interprets UILayoutAttributeBottom as the bottom of the text box (presuming the label is not bigger than its intrinsic content size) and UILayoutAttributeBaseline as the baseline of the text.
There's a small included stylus that slots in at the top of the screen (or the bottom, the screen auto-flips vertically based on how you hold the device) but while the stylus is fun for drawing notes, all you really need is a light tap or swipe with your fingers to operate the device.