Is there a way to create a command which is like a
\pagebreak (in that it suggests that it might be a good place to break a page, but certainly doesn't enforce it) but which inserts 'PTO' ("please turn over") near the bottom of the first page?
[The context is that I have computer-generated material in which there are, roughly speaking, many pairs of 'headers' and associated 'pictures'. Sometimes the pictures are so large that they have to go on a page of their own. The PTO would indicate that this has happened, and so one could distinguish a header-with-picture from a header-without-picture (which occasionally occurs).]