A couple days ago the subject (excuse the punn) of subject lines came up. This thread regarding the calculator lens really illustrates the problem. There are messages in the thread related to the calculator lens which is quite appropriate. However, there are also messages having to do with the typewriter lens. This kind of thing can really make it confusing when reading mail. Both topics are certainly valid for the list, but please use a subject line which is appropriate for the particular topic you're responding to. It will make it much easier for everyone. Thanks for your cooperation, The Moderator 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.