r339568 (a1db7455b75d7557fd171a537e2d95aceb20846e) removed bt(4). This revision removes the man page Reviewed by: emaste (previous version) Differential Revision: https://reviews.freebsd.org/D29480
r339568 (a1db7455b75d7557fd171a537e2d95aceb20846e) removed bt(4). This revision removes the man page Reviewed by: emaste (previous version) Differential Revision: https://reviews.freebsd.org/D29480