Someone please hit me with the "clue by four", what is KNF?

On Fri, 3 Jul 1998, The Source of All Evil wrote:

> 
> mrg
> Fri Jul  3 04:49:50 PDT 1998
> Update of /cvsroot/src/libexec/rpc.rusersd
> In directory nb00:/tmp/cvs-serv19229
> 
> Modified Files:
> 	rusers_proc.c rusersd.c 
> Log Message:
> KNF.
>