The following reply was made to PR misc/29208; it has been noted by GNATS.

From: Guy Harris <guy@alum.mit.edu>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: misc/29208: Various system call man pages say nothing about errors on immutable files
Date: Wed, 2 Feb 2005 18:14:19 -0800

 OpenBSD's unlink(2) man page *does* have it:
 
       [EPERM]       The named file has its immutable or append-only flag 
 set
                     (see chflags(2)).
 
 and their versions of other man pages might have it, too.