I've definitely done temporary damage to arms, shoulders, or wrists by doing too much scanning. It never hurt for more than a few days, but I have learned that there's a limit to the amount of scanning I can do, especially if the book is a challenge because of being very large or having a stiff binding. Kellie To unsubscribe from this list send a blank Email to bksvol-discuss-request@xxxxxxxxxxxxx put the word 'unsubscribe' by itself in the subject line. To get a list of available commands, put the word 'help' by itself in the subject line.