Hi, Marsha here. The best way to do the threshold/zoom thing is to do a little experimenting. When the letters are too thin where part of the printed letters are not visible under your finger, then the button goes up. If the reverse is true, then the knob will be turned down so that the letters don't look too thick. You want the letters to be thin enough so that the stuff doesn't feel muddy but thick enough so that the critical features of the various printed letters are discernible. As far as the zoom, that also is done more by experimenting as I have found. As far as that little switch that goes to the left, that is done for regular printed material rather than the computer lens position which is to the right. The default position is when that button or switch is all the way to the left which is that for regular print. When you crank it to the right, that is for computer screen or white print on black background. Hope this helps. Marsha -----Original Message----- From: optacon-l-bounce@xxxxxxxxxxxxx [mailto:optacon-l-bounce@xxxxxxxxxxxxx] On Behalf Of Eileen Misrahi Sent: Friday, November 02, 2012 8:15 AM To: optacon-l@xxxxxxxxxxxxx Subject: [optacon-l] Needing the Basics Hello List, I want to thank all that have responded and made the suggestions for finding a signature line. When I attempted to put all the suggestions to practice, I realized that I am a rank beginner. It's been so long ago when I received instructions and I couldn't find them because that computer has been laid to rest. I need basic setup directions on how to set the threshold, how much of the array pins I should be feeling under my finger, and which way the switch in the back of the machine should be placed. Right now, the back switch is slid to the left position, but I am not sure what this really represents (regular or reverse). When placing the camera on the page, is the camera held vertical or horizontal? I know this is an immense amount of questions, but I am willing to invest the time now to learn this wonderful device that no assistive technology will provide the information that will make it necessary to be independent in signing work related documents. I appreciate all of the suggestions and help from those who can guide me through the learning process. I remembered that someone on this list had the training manual. If it is still in that individual's possession, I would appreciate a copy to be sent off line to: eileenmis@xxxxxxxxxxxxxxx Thanks again for everyone's assistance in learning to use the Optacon. Best, Eileen 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. 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.