Can you also make sure to improve the keyboard shortcuts. Judging from the sample you mix upper- and lowercase. If one reads "CTRL + P" or "CTRL + R" one might

Can you also make sure to improve the keyboard shortcuts. Judging from the sample you mix upper- and lowercase. If one reads "CTRL + P" or "CTRL + R" one might be tempted to add the shift automatically to get the uppercase p, while later on you specifically write "CTRL + Shift + p". I also suggest a new version of the sample as soon as the new version of the book itself is done.