INTRO(9) BSD Kernel Manual INTRO(9)
intro - introduction to the kernel internals
The manual pages in section 9 contain information related to the internal kernel data structures, variables and functions.
This section describes places within the OpenBSD source tree where actual code implementing or using kernel internals can be found. All pathnames are relative to /usr/src.
The intro section manual page appeared in OpenBSD 1.2. MirBSD #10-current March 11, 1996 1