\"
\" Copyright (c) 1980, 1990, 1993
\"      The Regents of the University of California.  All rights reserved.
\"
\" Redistribution and use in source and binary forms, with or without
\" modification, are permitted provided that the following conditions
\" are met:
\" 1. Redistributions of source code must retain the above copyright
\"    notice, this list of conditions and the following disclaimer.
\" 2. Redistributions in binary form must reproduce the above copyright
\"    notice, this list of conditions and the following disclaimer in the
\"    documentation and/or other materials provided with the distribution.
\" 3. Neither the name of the University nor the names of its contributors
\"    may be used to endorse or promote products derived from this software
\"    without specific prior written permission.
\"
\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS `AS IS' AND
\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\" OR SERVICES; LESS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
\" SUCH DAMAGE.
\"
\" - Indent in multiples of 4, usually 8.
\"
\" - Use \` for literal back-quote (`).
\"
\" - Use \e for literal backslash (\).
\"
\" - Use \-, not -.
\"
\" - Include the tilde when naming dot files. .Pa ~/.login , not .Pa .login
\"
\" - Refer to external commands in man page format, e.g., .Xr csh 1
\"   However, tcsh is .Nm , because this is the tcsh man page (and
\"   see the next note anyway).
\"
\" - Write `the shell', not `tcsh', unless distinguishing between tcsh and csh.
\"
\" - Write `shell variable'/`environment variable' instead of `variable'
\"   and `builtin command'/`editor command' instead of `builtin' or `command'
\"   unless the distinction is absolutely clear from context.
\"
\" - Use the simple present tense. `The shell uses', not `The shell will use'.
\"
\" - IMPORTANT: Cross-reference as much as possible. Commands, variables,
\"   etc. in the reference section should be mentioned in the appropriate
\"   descriptive section, or at least in the reference-section description
\"   of another command (or whatever) which is mentioned in a description
\"   section. Remember to note OS-specific things in "OS variant support",
\"   new features in NEW FEATURES and referenced external commands in SEE
\"   ALSO.
\"
Dd July 9, 2025
Dt TCSH 1
Os Astron 6.24.16