/usr/share/man/man1/alsa_out.1.gz is in jackd2 1.9.10+20140719git3eb0ae6a~dfsg-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/alsa_in.1.gz
/usr/share/man/man1/alsa_in.1.gz