Harry moved the tip of his eagle-feather quill down the page, frowning as he looked for something that would help him write his essay, " Witch Burning in the Fourteenth Century Was Completely Pointless discuss."
He sank into a deep bow so that his pencil-like nose brushed the threadbare surface of the hearthrug and Hedwig gave an indignant hoot and fluttered on to the arm of Harry's chair.
Pen itself has a micro actuator inside, so you get subtle friction as you write, and the display is fused with optical bonding so the ink flows out from the very tip of your pen.
The pen and the ink have both given the writer trouble. The pen has run dry three times in writing a short address. There was probably very little ink in the bottle.
And he went on writing, so that his quill spluttered and squeaked. " If you have anything to say, say it. These two things can be done together, " he added.