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.\"	$OpenBSD: map3270.5,v 1.6 2003/01/21 19:59:09 jmc Exp $
.\" Copyright (c) 1986 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. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. 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; LOSS 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.
.\"
.\"	from: @(#)map3270.5	4.5 (Berkeley) 7/31/91
.\"
.TH MAP3270 5  "July 31, 1991"
.UC 6
.SH NAME
map3270 \- database for mapping ascii keystrokes into IBM 3270 keys
.SH SYNOPSIS
.B map3270
.SH DESCRIPTION
When emulating IBM-style 3270 terminals under \s-1UNIX\s0 (see \fItn3270\fR(1)),
a mapping must be performed between sequences of keys hit on
a user's (ascii) keyboard, and the keys that are
available on a 3270.  For example, a 3270 has a key labeled
.B EEOF
which erases the contents of the current field from the
location of the cursor to the end.
In order to accomplish this function,
the terminal user and a program emulating a 3270 must
agree on what keys will be typed
to invoke the
.B EEOF
function.
.PP
The requirements for these sequences are:
.nf
.ta 4n 9n
.sp
	1)	that the first character of the sequence be outside of the
		standard ascii printable characters;
.sp
	2)	that no sequence \fIbe\fR an initial part of another (although
		sequences may \fIshare\fR initial parts).
.sp
.fi
.SH FORMAT
The file consists of entries for various keyboards.  The first part
of an entry lists the names of the keyboards which use that entry.
These names will often be the same as in
.I /usr/share/misc/termcap
(see
.IR termcap (5));
however, note that often the terminals from various termcap entries will all
use the same
.I map3270
entry; for example, both 925 and 925vb (for
925 with visual bells) would probably use the same
.I map3270
entry.
Additionally, there are occasions when the terminal type defines
a window manager, and it will then be necessary to specify a
keyboard name (via the
.B KEYBD
environment variable) as the name of the entry.
After the names, separated by vertical bars (`|'), comes a left
brace (`{'); the definitions; and, finally, a right brace
(`}').
.PP
Each definition consists of a reserved keyword (see list below) which
identifies the 3270 function (extended as defined below), followed
by an equal sign (`='), followed by the various ways to generate
this particular function, followed by a semi-colon (`;').
Each way is a sequence of strings of
.I printable
ascii characters enclosed inside single quotes (`\(aa');
various ways (alternatives) are separated by vertical bars (`|').
.PP
Inside the single quotes, a few characters are special.
A caret
(`^') specifies that the next character is
the ``control'' character of whatever the character is.
So, `^a'
represents control-a, ie: hexadecimal 1
(note that `^A' would generate the same code).
To generate
.B rubout
(DEL),
one enters `^?'.
To represent a control character inside a file
requires using the caret to represent a control sequence;
simply typing control-A will not work.
Note: the ctrl-caret sequence
(to generate a hexadecimal 1E)
is represented as `^^' (not `^\e^').
.PP
In addition to the caret, a letter may be preceded by a backslash (`\e').
Since this has little effect for most characters,
its use is usually not recommended.
For the case of a single quote (`\(aa'), the backslash
prevents that single quote from terminating the string.
For the case of a caret (`^'), the backslash prevents
the caret from having its special meaning.
To have the backslash be part of the string, it is necessary to
place two backslashes ('\e\e') in the file.
.PP
In addition, the following characters are special:
.sp
.nf
.in +0.5i
`\eE'  means an escape character;
`\en'  means newline;
`\et'  means tab;
`\er'  means carriage return.
.in -0.5i
.fi
.sp
It is not necessary for each character in a string
to be enclosed within single quotes.
`\eE\eE\eE' means three escape characters.
.PP
Comments, which may appear anywhere on a line,
begin with a hash mark (`#'), and terminate
at the end of that line.
However, comments cannot begin inside a quoted string;
a hash mark inside a quoted string has no special meaning.
.PP
.SH 3270 KEYS SUPPORTED
The following is the list of 3270 key names that are supported in this file.
Note that some of the keys don't really exist on a 3270.
In particular, the developers of this file have relied
extensively on the work at the Yale University Computer Center with
their 3270 emulator which runs in an IBM Series/1 front end.
The following list corresponds closely to the functions
that the developers of the Yale code offer in their product.
.sp
.B In the following list, the
.B starred ("*")
.B functions are not supported by
.IR tn3270 (1).
An unsupported function will cause
.IR tn3270(1)
to send a (possibly visual) bell sequence to the user's terminal.
.sp
.nf
        3270 Key Name   Functional description

     (*)LPRT            local print
        DP              dup character
        FM              field mark character
        CURSEL          cursor select
        CENTSIGN        EBCDIC cent sign
        RESHOW          redisplay the screen
        EINP            erase input
        EEOF            erase end of field
        DELETE          delete character
        INSRT           toggle insert mode
        TAB             field tab
        BTAB            field back tab
        COLTAB          column tab
        COLBAK          column back tab
        INDENT          indent one tab stop
        UNDENT          undent one tab stop
        NL              new line
        HOME            home the cursor
        UP              up cursor
        DOWN            down cursor
        RIGHT           right cursor
        LEFT            left cursor
        SETTAB          set a column tab
        DELTAB          delete a column tab
        SETMRG          set left margin
        SETHOM          set home position
        CLRTAB          clear all column tabs
     (*)APLON           apl on
     (*)APLOFF          apl off
     (*)APLEND          treat input as ascii
     (*)PCON            xon/xoff on
     (*)PCOFF           xon/xoff off
        DISC            disconnect (suspend)
     (*)INIT            new terminal type
     (*)ALTK            alternate keyboard dvorak
        FLINP           flush input
        ERASE           erase last character
        WERASE          erase last word
        FERASE          erase field
        SYNCH           we are in synch with the user
        RESET           reset key-unlock keyboard
        MASTER_RESET    reset, unlock and redisplay
     (*)XOFF            please hold output
     (*)XON             please give me output
        ESCAPE          enter telnet command mode
        WORDTAB         tab to beginning of next word
        WORDBACKTAB     tab to beginning of current/last word
        WORDEND         tab to end of current/next word
        FIELDEND        tab to last non-blank of current/next
                        unprotected (writable) field.

        PA1             program attention 1
        PA2             program attention 2
        PA3             program attention 3

        CLEAR           local clear of the 3270 screen
        TREQ            test request
        ENTER           enter key

        PFK1            program function key 1
        PFK2            program function key 2
        etc.            etc.
        PFK36           program function key 36
.SH A SAMPLE ENTRY
The following entry is used by
tn3270(1) when unable to locate a reasonable version in the
user's environment and in /usr/share/misc/map3270:
.sp
.nf
        name {          # actual name comes from TERM variable
        clear = '^z';
        flinp = '^x';
        enter = '^m';
        delete = '^d' | '^?';   # note that '^?' is delete (rubout)
        synch = '^r';
        reshow = '^v';
        eeof = '^e';
        tab = '^i';
        btab = '^b';
        nl = '^n';
        left = '^h';
        right = '^l';
        up = '^k';
        down = '^j';
        einp = '^w';
        reset = '^t';
        xoff = '^s';
        xon = '^q';
        escape = '^c';
        ferase = '^u';
        insrt = '\E ';
        # program attention keys
        pa1 = '^p1'; pa2 = '^p2'; pa3 = '^p3';
        # program function keys
        pfk1 = '\eE1'; pfk2 = '\eE2'; pfk3 = '\eE3'; pfk4 = '\eE4';
        pfk5 = '\eE5'; pfk6 = '\eE6'; pfk7 = '\eE7'; pfk8 = '\eE8';
        pfk9 = '\eE9'; pfk10 = '\eE0'; pfk11 = '\eE-'; pfk12 = '\eE=';
        pfk13 = '\eE!'; pfk14 = '\eE@'; pfk15 = '\eE#'; pfk16 = '\eE$';
        pfk17 = '\eE%'; pfk18 = '\eE'; pfk19 = '\eE&'; pfk20 = '\eE*';
        pfk21 = '\eE('; pfk22 = '\eE)'; pfk23 = '\eE_'; pfk24 = '\eE+';
        }
.fi
.SH "IBM 3270 KEY DEFINITONS FOR AN ABOVE DEFINITION"
The charts below show the proper keys to emulate
each 3270 function when using the default key mapping supplied
with
.IR tn3270 (1)
and
.IR mset (1).
.sp
.nf
     Command Keys             IBM 3270 Key                  Default Key(s)
                              Enter                         RETURN
                              Clear                         control-z
     Cursor Movement Keys
                              New Line                      control-n or
                                                            Home
                              Tab                           control-i
                              Back Tab                      control-b
                              Cursor Left                   control-h
                              Cursor Right                  control-l
                              Cursor Up                     control-k
                              Cursor Down                   control-j or
                                                            LINE FEED
     Edit Control Keys
                              Delete Char                   control-d or
                                                            RUB
                              Erase EOF                     control-e
                              Erase Input                   control-w
                              Insert Mode                   ESC Space
                              End Insert                    ESC Space
     Program Function Keys
                              PF1                           ESC 1
                              PF2                           ESC 2
                              ...                           ...
                              PF10                          ESC 0
                              PF11                          ESC -
                              PF12                          ESC =
                              PF13                          ESC !
                              PF14                          ESC @
                              ...                           ...
                              PF24                          ESC +
     Program Attention Keys
                              PA1                           control-p 1
                              PA2                           control-p 2
                              PA3                           control-p 3
     Local Control Keys
                              Reset After Error             control-r
                              Purge Input Buffer            control-x
                              Keyboard Unlock               control-t
                              Redisplay Screen              control-v
     Other Keys
                              Erase current field           control-u
.fi
.SH FILES
/etc/map3270
.SH SEE ALSO
tn3270(1), mset(1), \fIYale ASCII Terminal Communication
System II Program Description/Operator's Manual\fR
(IBM SB30-1911)
.SH AUTHOR
Greg Minshall
.SH BUGS
.I Tn3270
doesn't yet understand how to process all the functions
available in
.I map3270;
when such a function is requested
.I tn3270
will beep at you.
.PP
The definition of "word" (for "word erase", "word tab") should be a run-time
option.  Currently it is defined as the kernel tty driver defines it (strings
of non-whitespace); more than one person would rather use the "vi" definition
(strings of specials, strings of alphanumeric).