Dave, Interesting design idea; but we are all used to tracking with one hand and reading with the other, so it would be quite an adjustment. Mary Emerson E-mail: maryemerson@xxxxxxxxxxxxx Skype name: mkemerson Podcast web site: http://www.emerson.libsyn.com Podcast feed: emerson.libsyn.com/rss 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.