Jim, I always keep my intensity on 10, maximum, because it feels very much like braille. Minimum useful intensity: 4______ The intensity you use most: 10______ Maximum useful intensity: 10______. Mary to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.