ADDITIONAL DOCUMENTATION
FreeBSD uses libxo version 1.6.0. Complete documentation can be found on github:

    https://juniper.github.io/libxo/1.6.0/html/index.html

libxo lives on github as:

    https://github.com/Juniper/libxo

The latest release of libxo is available at:

    https://github.com/Juniper/libxo/releases

HISTORY
The libxo library was added in FreeBSD 11.0.

AUTHOR
Phil Shafer