POSIX manpages incorporated to Linux

POSIX manpages incorporated to LiNUX

"The IEEE and The Open Group have granted permission to the Linux Manual
Pages Project to incorporate material from the joint IEEE 1003.1 POSIX
standard and The Open Group Base Specifications Issue 6.
Get them from kernel.org.
IEEE & The Open Group's press release and Linux Manual Pages Project's
press release have more details.
Also you can get for free the full 'The Single UNIX(R) Specification',
Version 3".