I have updated the FAQs based on suggestions. Thank you to everyone who read through them. More comments (by email or at GitHub) are welcome.
I would also be grateful if anyone who has experienced the problem of DeDRM failing when importing a large number of ebooks, and can reproduce the problem with DeDRM 6.4.3, would get in touch with me by email or by commenting on the
new issue I've opened at github. I've had an idea about what might be causing it, but I can't reproduce it myself to test a possible solution.