The Single UNIX Specification Version 4, technically identical to IEEE
Std 1003.1, 2016 Edition or The Open Group Base Specifications Issue 7
is a technical standard. It includes IEEE Std 1003.1-2008/Cor 1-2013,
the Technical Corrigenda No. 1 and No. 2 addressing problems discovered
since the approval of the 2008 edition.

This port permits to install and register the HTML personal copy
that the user must download in .tar.bz2 format by himself.

WWW: http://www.unix.org/online.html