While the title may appear quite strange, the article is about installing a package to have a new random wallpaper everytime you start the X session!
First, you need to install a package named
openbsd-backgrounds which is quite
large with a size of 144 MB. This package made by Marc Espie contains lot of
pictures shot by some OpenBSD developers.
You can automatically set a picture as a background when xenodm start and
prompt for your username by uncommenting a few lines in the file
Uncomment this part
if test -x /usr/local/bin/openbsd-wallpaper then /usr/local/bin/openbsd-wallpaper fi
openbsd-wallpaper will display a different random picture on
every screen (if you have multiples screen connected) every time you run it.