RC4 is a trademark. Rest of text left intact.

src/lib/libc/crypt/arc4random.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: arc4random.3,v 1.17 2000/12/21 14:07:41 aaron Exp $
+.\" $OpenBSD: arc4random.3,v 1.18 2005/06/07 19:04:58 kjell Exp $
 .\"
 .\" Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
 .\" All rights reserved.
@@ -95,7 +95,7 @@ automatically initializes itself.
 An algorithm called
 .Pa RC4
 was designed by RSA Data Security, Inc.
-It was considered a trade secret, but not trademarked.
+It was considered a trade secret.
 Because it was a trade secret, it obviously could not be patented.
 A clone of this was posted anonymously to USENET and confirmed to
 be equivalent by several sources who had access to the original cipher.