document rot13;

based on a PR from Free/Net, which for the life of me i cannot find.

thanks, whoever submitted it.

1 files changed, 15 insertions, 10 deletions

diff --git a/games/caesar/caesar.6 b/games/caesar/caesar.6
index 5829b0c06b8..5cf5c12770c 100644
--- a/games/caesar/caesar.6
+++ b/games/caesar/caesar.6
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: caesar.6,v 1.6 2003/06/03 03:01:39 millert Exp $
+.\"	$OpenBSD: caesar.6,v 1.7 2004/02/18 20:08:31 jmc Exp $
 .\"
 .\" Copyright (c) 1989, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -33,11 +33,13 @@
 .Dt CAESAR 6
 .Os
 .Sh NAME
-.Nm caesar
+.Nm caesar ,
+.Nm rot13
 .Nd decrypt caesar cyphers
 .Sh SYNOPSIS
 .Nm caesar
 .Op Ar rotation
+.Nm rot13
 .Sh DESCRIPTION
 The
 .Nm
@@ -50,23 +52,26 @@ The optional numerical argument
 .Ar rotation
 may be used to specify a specific rotation value.
 .Pp
-The frequency (from most common to least) of English letters is as follows:
+If this utility is invoked as
+.Nm rot13 ,
+it will rotate by 13 characters.
+This format is commonly used on
+.Tn USENET
+and in some of the databases used by the
+.Xr fortune 6
+program to
+.Dq disguise
+their content.
 .Pp
+The frequency (from most common to least) of English letters is as follows:
 .Bd -filled -offset indent
 ETAONRISHDLFCMUGPYWBVKXJQZ
 .Ed
 .Pp
 Their frequencies as a percentage are as follows:
-.Pp
 .Bd -filled -offset indent
 E(13), T(10.5), A(8.1), O(7.9), N(7.1), R(6.8), I(6.3), S(6.1), H(5.2),
 D(3.8), L(3.4), F(2.9), C(2.7), M(2.5), U(2.4), G(2),
 P(1.9), Y(1.9),
 W(1.5), B(1.4), V(.9), K(.4), X(.15), J(.13), Q(.11), Z(.07).
 .Ed
-.Pp
-Rotated postings to
-.Tn USENET
-and some of the databases used by the
-.Xr fortune 6
-program are rotated by 13 characters.