On Sat, 2 Dec 2000, Markus Kuhn wrote:
> The appropriate bookmark for such cases should be the Single UNIX
> Specification, which is freely available after registration on
>
> http://www.opengroup.org/onlinepubs/007908799/
Also, a somewhat easier to remember alias for the above is:
http://www.unix-systems.org/single_unix_specification_v2/