On Sun, Jun 9, 2013 at 7:40 PM, E Sabof <esabof@gmail.com> wrote:

It would help if you could show a recipe with one of these starting
from "emacs -Q".

Sure:

M-x hs-minor-mode
Scroll until only the last line is visible
M-x hs-hide-all


It already does something similar, if you repeat the above recipe, but two lines are visible.