1.\" $NetBSD: cgram.6,v 1.4 2021/04/29 20:17:20 rillig Exp $ 2.\" 3.\" Copyright (c) 2004, 2013 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by David A. Holland. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd April 29, 2021 31.Dt CGRAM 6 32.Os 33.Sh NAME 34.Nm cgram 35.Nd solve Sunday-paper cryptograms 36.Sh SYNOPSIS 37.Nm Op Ar file 38.Sh DESCRIPTION 39.Nm 40is a curses-based widget for solving Sunday-paper-type cryptograms 41based on substitution ciphers. 42If 43.Ar file 44is given, it is used as cleartext, otherwise a random cleartext is 45chosen using 46.Xr fortune 6 ; 47either way, a random substitution key is generated. 48.Pp 49The ciphertext is displayed. 50Typing a letter changes the key so that the letter under the cursor 51maps to the newly typed letter, and updates the display accordingly. 52Use Emacs-type cursor commands to move around. 53Enter a tilde 54.Pq ~ 55to quit. 56Press asterisk 57.Pq * 58to enter an easier mode where correct characters are displayed in 59boldface. 60.Sh SEE ALSO 61.Xr caesar 6 62.Sh HISTORY 63.Nm 64was written circa 2004. 65It was imported into 66.Nx 67in 2013 and first appeared in 68.Nx 7.0 . 69