At the bottom of the order form is a spot for your "signature". If you click it, there are options to use an existing digital signature (if you have one) or create a new one. I created a new one when I did mine, filled out the boxes that came up and it seemed to work fine. The other option, as you indicated, would be to print it out, sign it by hand and mail or fax it. I'm guessing either way is ok.
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