Would be nice if more man pages were like the OpenBSD ones, since they actually do that pretty consistently, in my experience. Probably what I would go with if I needed to install something on a computer I would be locked up with somehow, without internet access.

Unfortunately, as I recall, there are occasional differences in how their version of commands work, versus the same command in Linux. For one example, look at the difference in the man pages for ifconfig between Arch Linux and OpenBSD.