Sources of Information
OpenBSD provides information through three primary channels: manual (man) pages, websites, and mailing lists. To understand why your system behaves in a particular way in your environment, you might need to check all three.
Man pages are the original format for presenting documentation on Unix-like systems. While man pages have a reputation for being obtuse, difficult to read, or incomplete, the OpenBSD team expects its man pages to be readable, correct, and complete.
When man pages were first created, the average system administrator was a C programmer. As a result, man pages were written by programmers for programmers. The OpenBSD developers are programmers and consider man pages the final word in OpenBSD ...