I've put Used: acceptable condition on the description.
I've just realised a few have some notes in the front cover, or my initials - do you think I should update the listings to say that specifically? Or do you think it's covered in the word 'acceptable'?
I'm pretty sure I haven't answered exercises etc, and the notes are just inside the front cover, but can't be 100% sure so don't want to go into too much detail.