Jeff,
Thanks but I tried this on my system here using 16.20 (and other releases) and I didn't get any scrollbar. I tried both with $0d0a$ between each lin, $0a$ between each line, and nothing between the lines -- all worked.
Here is what I did.
->print x$
<p>Hinge Locations are measured from Top of Door</p>
<p>Hinge Location 1: 7-12</p>
<p>Hinge Location 2: 7-12</p>
<p>Hinge Location 3: 7-12</p>
->list_box 10,@(10,10,10,10),tip=x$