P.T.O.

please turn over (a page or leaf).

Also, p.t.o.

* * *

p.t.o. or P.T.O.,

Especially British. please turn over (a page).

PTO (no periods),

power take-off: »

The PTO drives the moving parts of mowing machines, hay balers, combines, potato diggers, and spray pumps (A. D. Longhouse).