p.330. "In LibreOffice recording..." should be "In LibreOffice,
recording..."
p.331. "Although you can store..., if you use..." Would be better
written "You can store..., but if you use..."
p.334. "..very complete" should be "very extensive".
p.340 "black triangle" It's actually a rhombus.
p.346. "..forcing you to forcibly terminate..." reads oddly.