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Invokes SED, a full screen-oriented text editor. The format of the
SED command is [items enclosed in square brackets are optional]:
SED is documented in the SED tutorial (SYS$DOC:SED.MAN) and SED
reference (SYS$DOC:SED.DOC) manuals.
SED is a full screen text editor. It is easier and more natural to
use than line or character editors like SOS or TECO, and is generally
faster too. SED lets your display terminal's screen become a window
through which you can see and edit a text file. The window is updated
immediately as you make changes, so you always see exactly what your
file looks like.
SED is easy to use. To enter text into your file, just type. To
change existing text, just type over it. There are commands to move
around on the screen, move around in the file, insert or delete lines
or spaces, move text from one place to another, search, edit two files
at the same time, get help, and other useful things. For sophisticated
users, SED has a "macro" facility, too.
This VAX version of SED was written and is still under development
here at BYU. It is based on the DEC-10 version of SED written by A
Christopher Hall, a DEC employee. SED was so popular on our DEC-10 that
we decided to make it available on our new VAX system. Most of the
commands and features of DEC-10 SED have been implemented; the rest are
The current version of SED runs on the following terminal types: A
true DEC VT52, Infoton 200, Ramtek 6211 graphics terminal, DEC VT100,
Televideo 910, and Visual 200 in VT52+ mode. However, SED can be
configured to run on many other terminals too. Please contact a
Consultant, 424 CB, 378-4941, for more information.
As previously stated, SED is still under development. Please report
any bugs in SED to MANAGER via the MAIL command. The following is a
list of known deficiencies or problems in VAX SED. We plan to fix all
of them (eventually).
1. Don't type Control-Ys (the <ROLL-FORWARD-PAGE> command) too fast.
If you type two <ROLL-FORWARD-PAGE> commands in succession such
that you type the second <ROLL-FORWARD-PAGE> before the first
<ROLL-FORWARD-PAGE> finishes, SED will drop to DCL command level.
This is intentional. SED is still under development. We need a way
to stop SED when a newly discovered bug puts SED in a loop!
If you do type Control-Ys too fast and find yourself at DCL level,
you can still return to SED without losing anything. Just type
"CONTINUE" and press return (then type a <REWRITE-SCREEN> command).
2. Certain commands will clear the pick buffer: <HELP> and reading an
execute command file indirectly (<ENTER>@file.xct<EXECUTE>).
3. SED's "looking through a list of files" option, described in
Appendix B of SED.DOC, is not implemented.
4. The SED reference manual (SYS$DOC:SED.DOC) describes the DEC-10
version of SED. It hasn't been edited for the VAX yet. However, you
can still use it. The only noticeable difference between SED on the
DEC-10 and on the VAX is in the way you specify a file name. All
the commands (that are implemented) still work the same.
5. The SED tutorial manual (SYS$DOC:SED.MAN) has been edited for the
VAX. Where the SED tutorial and reference manuals disagree, the
tutorial is correct.
The name of the file you wish to create or edit.
There are three ways to specify the filespec when you start up the
SED editor. At DCL command level type:
SED filespec= SED will find or create (if the file doesn't exist yet)
the specified file. SED's editing window is positioned to the beginning
of the file.
SED filespec SED will find the specified file. SED's editing window
is positioned to the beginning of the file.
If SED can't find the file, a "file not found" error message is
displayed. SED will then return you to the previous file you were
editing (if there was one). If you haven't edited a file yet, SED will
display a cheery welcoming message.
SED SED will return you to the last file you edited with
SED. SED's editing window is positioned to the same place in the file
as where you left off last time.
If you haven't edited a file yet, SED will display a cheery welcoming
SED has over 50 built-in commands (you can also define your own).
They are summarized below. The commands are grouped by the function
they perform. For complete SED command descriptions, see the SED
tutorial (SYS$DOC:SED.MAN) and reference (SYS$DOC:SED.DOC) manuals. Or
try SED's built-in HELP facility.
COMMANDS to MOVE the CURSOR
CURSOR-UP Move the cursor up
CURSOR-DOWN Move the cursor down
CURSOR-LEFT Move the cursor to the left
CURSOR-RIGHT Move the cursor to the right
CURSOR-HOME Move the cursor to the upper left
CARRIAGE-RETURN Move the cursor to start of next line
TAB Move cursor to the next tab stop
BACKTAB Move cursor to the previous tab stop
UP-TAB Up-tab (6 cursor-ups)
DOWN-TAB Down-tab (6 cursor-downs)
LINE Move to beginning or end of line
BEGIN-LINE Move to beginning of line
END-LINE Move to end of line
COMMANDS to MOVE the WINDOW
ROLL-FORWARD-PAGES Move window forward some pages
ROLL-FORWARD-LINES Move window forward some lines
ROLL-BACK-PAGES Move window back some pages
ROLL-BACK-LINES Move window back some lines
SLIDE-LEFT Move viewing window to the left
SLIDE-RIGHT Move viewing window to the right
PERCENT-GOTO Move window a percentage into the file
COMMANDS to INSERT and DELETE
INSERT-SPACES Add some spaces at the cursor
DELETE-SPACES Remove some characters from a line
INSERT-LINES Add some blank lines at the cursor
DELETE-LINES Remove some lines at the cursor
ERASE-LINE Erase from cursor to end of the line
DELETE-CHARACTER Delete the character to left of cursor
ERASE-WORD Delete previous word
INSERT-MODE Insert/replace mode toggle
ENTER-CONTROL-CHARACTER Make the next character typed a control char
REAL-TAB Insert a real tab (Same as <E-C-C>I)
PICK Load buffer with text from the file
PUT Add text to the file from a buffer
MARK Mark position for PICK or DELETE-LINES
COMMANDS to ENTER or EDIT PARAMETERS
ENTER Set up an argument for a command
RECALL Recall latest argument
RESET Cancel argument; rewrite cursor, line,
COMMANDS to SEARCH and SUBSTITUTE
SEARCH-FORWARD Search from cursor toward end of file
SEARCH-BACKWARD Search from cursor toward start of file
SUBSTITUTE Search for a string & substitute another
COMMANDS to EXIT, SAVE, or SELECT a FILE
EXIT Save file and exit
ABORT Exit, forgetting changes
SAVE-FILE Save file without exiting
SET-FILE Set up a new file for editing
CASE Change case of letter at cursor
EXECUTE Set up or execute a sequence of commands
HELP Give help (individual command summaries)
REWRITE Rewrite screen (Same as <ENTER>^<RESET>)
SWITCH Set/query operating switches
TAB-SET/CLEAR Set or clear settable tabs
WINDOW Set or clear split screen windowing
Executing SED Commands
About half of SED's commands are executed by typing a CONTROL
CHARACTER. The rest are executed by typing a two character ESCAPE
SEQUENCE or (if your terminal has them) by pressing a FUNCTION KEY.
Therefore, what you type may vary somewhat from terminal to terminal.
Control Character Commands
Typing a CONTROL CHARACTER means to momentarily hold down the CONTROL
key (usually labelled 'CTRL') while you press one of the other keys
(usually a letter) on the keyboard. This is similar to the way you use
the SHIFT key on a typewriter. You'll find the CONTROL key on the left
side of the keyboard, near the SHIFT key. Thirty-two characters can be
typed as control characters: A-Z, [, @, _, ], ^, and \. For
alphabetical control characters, no distinction is made between upper
and lower case: CONTROL-A is the same as CONTROL-a.
Reguardless of the terminal you use, SED commands invoked by the
alphabetical control characters are assigned as shown below. The
location and commands assigned to the [, @, _, ], ^ and \ keys vary.
| ROLL-BACK | SEARCH |ROLL-FORWRD| TAB |ENTER|PRCNT|
|PAGES LINES|BKWRD FORWD|LINES PAGES|BKWRD FORWD|C-CH |GOTO |
| q w | e r | t y | u i | o | p |
|INSRT DELET|INSRT DELET|PUT | CURSOR |
| SPACES | LINES | |LEFT DOWN UP RIGHT|
| a s | d f | g | h j k l |
|EXIT |EXE- |ABORT|PICK |SET |SWTCH|RE- |
| |CUTE | | |FILE | |TURN |
| z | x | c | v | b | n | m |
Notice how the commands are grouped. There is no mnemonic
relationship (except by coincidence) between the name of a command and
the key it is on. Instead, commands with similar functions are placed
near each other. Most SED users agree that this system is better than a
mnemonic placement which would chaotically scatter the commands all
over the keyboard.
Escape Sequence Commands
Typing an ESCAPE SEQUENCE means to type two keys in succession (not
simultaneously). The first key you type is always an ESCAPE. The second
key you type is usually a letter. If your terminal doesn't have a lot
of function keys, you'll probably have to type some SED commands as
escape sequences. (Note: the Visual 200, DEC VT52 and VT100 terminals
have function keys. Therefore, these terminals DO NOT use the escape
sequences described in this section.)
SED commands invoked by an escape sequence are assigned as shown
below. Note: it doesn't matter whether the second character of the
sequence is typed in upper or lower case.
|ENTER|REWRT|ERASE|END |SLIDE|REAL |TAB |UP |INSRT|WIN- | |
|PARAM|SCREN|WORD |LINE |RIGHT|TAB |SET/C|TAB |MODE |DOW | |
| esc | q | w | e | r | t | y | u | i | o | p |
|RECAL|SAVE |DELET| | |CURSR|DOWN |ERASE|SLIDE|
| |FILE |CHAR | | |HOME |TAB |LINE |LEFT |
| a | s | d | f | g | h | j | k | l |
|RESET|LINE |CASE | |BEGIN|IN- |MARK | | |HELP |
| | | | |LINE |VERT | | < | > | ? |
| z | x | c | v | b | n | m | , | . | / |
Unlike the CONTROL CHARACTER commands, notice that there is (as much
as possible) a mnemonic relationship between the name of an ESCAPE
SEQUENCE command and the key to which it is assigned.
Function Key Commands
Typing a FUNCTION KEY means to press a specially labelled key.
Function keys are provided for convenience. Pressing one is equivalent
to typing a control character or an escape sequence.
All terminals minimally have
DELETE Also labelled: DEL, RUBOUT, RUB or RO
Equivalent to: (no equivalent)
SED command: DELETE-CHARACTER
ESCAPE Also labelled: ESC, ALTMODE, ALT, SELECT, SEL
Equivalent to: CONTROL-[
SED command: ENTER-PARAMETER (press twice)
HELP (press four times)
LINE FEED Also labelled: LF
Equivalent to: CONTROL-J
SED command: CURSOR-DOWN
RETURN Also labelled: CR, RET, or NEW LINE
Equivalent to: CONTROL-M
SED command: RETURN
Most terminals will also have
BACKSPACE Also labelled: BS, BACK
Equivalent to: CONTROL-H
SED command: CURSOR-LEFT
TAB Also labelled: (no other label)
Equivalent to: CONTROL-I
SED command: TAB-FORWARD
Many terminals have additional function keys. Cursor mover keys are
labelled with directional arrows. Other function keys are usually
labelled F1, F2, F3, etc.; or perhaps PF1, PF2, PF3, etc. They are
commonly placed across the top and/or down the side of the keyboard. On
some terminals, the numeric keypad doubles as an extra set of function
When pressed, these additional function keys send a control
character or an escape sequence. Unfortunately, the code sent varies
from one terminal model to another. So does the location and number of
function keys. Therefore, the SED command invoked by pressing a
function key depends on which terminal model you are using.
The only terminals with "additional" function keys used by the
current version of SED are: Visual 200, DEC VT52 and VT100. Therefore,
these terminals DO NOT use the escape sequences defined in the previous
section, "ESCAPE SEQUENCE COMMANDS."
For more details, see the "SPECIAL NOTES" section later in this
Qualifiers (switches) tailor SED's operation to your liking. They
can be given as part of the file name in the DCL level SED command, in
your SED.INI file, or via the <SWITCH> and <SET-FILE> commands while
You only have to type enough of the qualifier name to make it unique
("/T" is good enough for TABS).
You can set more than one switch by separating them with slashes,
for example /TABS=6/CASE/BACK
Each qualifier and its default setting is listed below.
/[NO]ISAVE[=n] /NOISAVE (/ISAVE=0)
/[NO]READ /WRITE (/NOREAD)
/[NO]SAVE[=n] /NOSAVE (/SAVE=0)
/[NO]WRITE /WRITE (/NOREAD)
/AGAIN may be given in a <SET-FILE> command. If you are editing
FILE.FOO, typing <ENTER>/AG<SET-FILE> acts the same as if the parameter
were "FILE.FOO". This qualifier is useful when you want to make the
current and alternate file be the same file -- allowing you to toggle
back and forth between two places in the same file. Do not use explicit
filespecs with /AGAIN.
/AGAIN=n acts the same as /AGAIN/GOTO=n -- the numeric argument is a
percentage of the way into the file.
/ALT may be given on the DCL level SED command. It swaps the current
and alternate files you were editing last time.
/ALT=n acts the same as /ALT/GOTO=n - the numeric argument is a
percentage of the way into the file.
Controls whether <PICK> appends to the PICK buffer, or overwrites
/APPND causes <PICK>s to append to the PICK buffer until /NOAPPND or
another /APPND is typed.
/NOAPPND causes <PICK>s to overwrite the PICK buffer. This is the
Controls whether SED overwrites or creates a new version of the file
you are editing.
/BACKUP causes SED to create a new version of your file each time it
is edited. This is the default.
/NOBACKUP causes SED to overwrite the file each time it is edited.
This saves disk space, but you lose the original version of the file.
Controls whether your terminal beeps or displays a message when SED
is in INSERT mode.
/BEEP causes the terminal to beep once when entering INSERT mode and
twice when entering REPLACE mode.
/NOBEEP causes an "INSERT MODE" message to appear on the bottom line
of the terminal when SED is in INSERT mode. No message is displayed
when SED is in REPLACE mode. This is the default.
Controls whether searches are case-dependent.
/CASE makes searches case-dependent, i.e., the key "THE" is
different from the key "the".
/NOCASE makes searches independent of case, i.e., the key "THE" will
match the first occurrence of "THE", "the", "tHe", etc. This is the
Controls whether an equal sign (=) is needed after the name of a
file you want to create.
/CREATE frees you from having to type an equal sign (=) after the
name of the file you want to create with SED. (SED will first still try
to find the file you specified, including trying default file
extensions, before it gives up and creates the new file.)
/NOCREATE causes SED to create a new file only if the file name is
followed with an equal sign (=). This is the default.
Controls whether TABS in a file are highlighted.
/DTABS causes tabs to identify themselves. Each tab displays as a
highlighted "I" followed by one fewer space than usual (so the columns
on the screen are still aligned properly).
/NODTABS inhibits any special indication of TABs in your file. This
is the default.
/GOTO=n may be used when running SED or doing a <SET-FILE>. The file
will be displayed starting n percent of the way into the file. If your
specify /GOTO without an argument, SED will use the current percent
value (default is n=0).
Controls what key(s) you type to get help about SED commands.
/HELP enables on-line help when <ENTER><ENTER> is typed, as well as
<HELP>. This is the default.
/NOHELP inhibits on-line help when <ENTER><ENTER> is typed. The only
way to get help is with <HELP>.
Controls what happens when you press <RETURN> in INSERT mode.
/ICR causes a <RETURN> typed in INSERT mode to insert a carriage
return, linefeed into your text. If you are in the middle of a line,
the line is broken into two lines.
/NOICR causes a <RETURN> typed in INSERT mode just to position the
cursor to the beginning of the next line. This is the same way <RETURN>
works in REPLACE mode. This is the default.
Controls whether an identifying line is added to the beginning of a
file each time it is edited.
/ID causes an identifying line to be inserted at the beginning of a
file when it is saved. The line contains the filespec, the date and
time, and the name of the user who edited the file.
/NOID prevents an identifying line from being inserted in the file.
This is the default.
Controls whether SED is in replace or insert mode. This qualifier
performs the same function as the <INSERT-MODE> command.
/IMODE puts SED in insert mode. This qualifier can also be used in
execute buffers ($IM^SW).
/NOIMODE puts SED in replace mode. This is the default.
Controls the action of the <CASE> command.
/INVRT causes <CASE> to invert the case of a letter. "S" becomes
"s", "p" becomes "P", etc. This is the default.
/NOINVRT causes <CASE> to use the setting of the /RAISE qualifier.
/NOISAVE or /ISAVE=0 (D)
Causes an incremental save of your file every n commands. Default is
n=0 (i.e., no incremental saves).
/ISAVE and /SAVE can be used together. When the counter for either
one reaches its limit, the file is saved, and both counters are reset.
Controls whether SED can use tab characters to extend a line.
/NOITABS - If you type something beyond the end of a line SED will
insert only spaces so the character is properly positioned.
/ITABS - If you type something beyond the end of a line, SED will
use tabs where possible instead of spaces so the character is properly
positioned. This is the default.
Controls whether SED makes a journal of your editing session.
/JOURN starts a journal into which SED logs all the commands and
text typed during an editing session. The journal file (SEDJRN.TMP) can
be used to recover your work after a system crash. See /RECOV.
/NOJOURN stops journaling, if it was in effect. This is the default.
This qualifier applies only to VT100 and VT52 terminals.
/KEYPAD tells SED to put your terminal's keypad in alternate keypad
mode. This is the default on VT100 terminals. The keypad to the right
of the keyboard is then used as a set of function keys, rather than a
/NOKEYPAD takes your terminal's keypad out of alternate keypad mode.
The keys can then be used as a numeric keypad.
This switch currently is of value only for VISUAL 200 terminals.
Normally, the Visual 200 "comes up" in standard keypad mode (pressing a
key types a number. You have to hold down "convert function" to make
function keys out of the keypad.). If the /KEYPAD switch is given in
SWITCH.INI or on the monitor level SED command, then the keypad is put
in alternate keypad mode. Then pressing a key invokes a command, rather
than typing a number. See DOC:SEDVS2.KYS for details.
/LENG=n (D=24, usually)
Causes SED to think your terminal is n lines long. Good for limiting
the amount of information written on a slow terminal. The default for n
is the number of lines displayable on your terminal, usually 24.
/LMAR=n - Sets the left margin to be column n. Default is 1.
/MESSAGE causes an identifying "; This is file ..." line to be
inserted automatically as the first line of a new file.
/NOMESSAGE suppresses the identifying line (and the cheery "Hi! This
is SED..." message normally displayed when there is no file to edit).
Changes the name of the file being edited (or being set to, if the
qualifier is given in a <SET-FILE> or DCL level SED command) to be
Controls how the <SWITCH> command displays the current line number.
/PAGE causes <SWITCH> to output your position as PAGE-LINE from the
start of file. Pages are delimited by formfeeds (^L).
/NOPAGE causes <SWITCH> to output your position as the total number
of LINES from the start of file. This is the default.
The /PROG qualifier establishes a program, DCL command, or Command
Procedure to be executed upon exiting from SED. The qualifier may be
included as part of the SED command at command level or it may be
placed in the SED.INI file. The program to execute can also be
established while in SED using the <ENTER>program<SWITCH> sequence. If
the sequence <ENTER><EXIT> is used, the default program to run is
SYS$BYU:COMPIL. For more information on COMPIL, type the DCL command
Some examples of this qualifier appear below:
/PROG=RUNOFF will cause RUNOFF to be run upon exiting from SED.
/PROG=$command will cause the DCL command "command" to be executed
upon exiting. "Command" must not include any imbedded blanks or any
trailing qualifiers. For example, /PROG=$DIRECTORY will cause SED to
execute the DCL DIRECTORY command upon exiting.
/PROG=@command_procedure will cause the DCL command procedure
"command_procedure" to be executed upon exiting. For example,
/PROG=@SYS$COM:TMOUNT.COM will cause the TMOUNT command procedure in
the system command procedure library to be executed.
Controls the initial display of a file on the screen.
/QUICK suppresses the initial display of a file on your terminal's
screen after a DCL level SED command or a <SET-FILE> command. This is
useful on a slow terminal when you are not interested in what is on the
first page of the file.
/NOQUICK allows SED to display the first page of the file. This is
Controls how the <CASE> commands works, if /NOINVRT is set.
/RAISE tells <CASE> to change lower case letters to upper case.
/NORAISE tells <CASE> to change upper case letters to lower case.
/RCUR may be used with <SET-FILE>. It causes the current filespecs,
rather than the alternate specs, to be replaced by the given ones.
Useful for "keeping your finger" in one file (the alternate) while
looking at several others.
/READ makes the file read-only. /READ is the opposite of /WRITE.
Controls whether SED starts a normal editing session, or
reconstructs a file using the journal from an inadvertently (as in a
system crash!) aborted SED session.
Typing SED/RECOV at DCL command level tells SED to recover the
previous editing session using the journal. See /JOURN.
Controls whether the starting nominals for parameters are reset
after each command.
/RESET causes the starting nominal parameters to be reset after each
command. Thus, <ENTER>5<INSERT-LINE><INSERT-LINE> will insert 6 lines.
This is the default.
/NORESET - do not reset starting nominal parameters after each
command. Thus, <ENTER>5<INSERT-LINE><INSERT-LINE> will insert 10 lines.
/RMAR=n (D=80, usually)
/RMAR=n - Sets the right margin to be column n. Default is the width
of the screen (usually 80).
Controls what happens when you type <RETURN> on the last line of the
/ROLL causes the text on the screen to roll one line if the cursor
is at the bottom of the screen and you type <RETURN>.
/NOROLL causes the cursor to move to the top of the screen if the
cursor is at the bottom of the screen and you type <RETURN>. The text
on the screen does not roll.
/NOSAVE or /SAVE=0 (D)
Causes an incremental save of your file every n characters of
typein. Default is n=0 (i.e., no incremental saves).
/ISAVE and /SAVE can be used together. When the counter for either
one reaches its limit, the file is saved, and both counters are reset.
Controls what happens when you type <CURSOR-DOWN> on the last line
of the screen or <CURSOR-UP> on the first line of the screen.
/SCROLL causes the text on the screen to scroll one line if the
cursor is at the bottom (or top) of the screen and you type
<CURSOR-DOWN> (or <CURSOR-UP>).
/NOSCROLL causes the cursor to wrap around on the screen instead of
scrolling any text. For example, a <CURSOR-DOWN> on the last line of
the screen moves the cursor to the first line of the screen. Likewise,
a <CURSOR-UP> on the first line of the screen moves the cursor to the
last line of the screen. This is the default.
Controls the display on your screen while <EXECUTE> is working.
/SHOW causes the effects of an <EXECUTE> command to be displayed
while it is working.
/NOSHOW updates the screen only when the <EXECUTE> is done. This is
Controls the <SLIDE-LEFT> and <SLIDE-RIGHT> commands.
/SLIDE=n enables the <SLIDE-LEFT> and <SLIDE-RIGHT> commands. If the
optional value n is specified, is sets the default number of columns to
slide (or to /RESET to). The starting default for n is 8.
/NOSLIDE disables the <SLIDE-LEFT> and <SLIDE-RIGHT> commands.
/SLIDE=0 is equivalent to /NOSLIDE.
/TABS=W or /NOTABS
Controls the way <TAB> and <BACKTAB> move.
/TABS makes <TAB> and <BACKTAB> use the usual tab positions.
/NOTABS or /TABS=W sets up word-wise TABS.
/TABS=n sets up tab stops every n positions (clears all previously
set tabs first). The default is /TABS=8. For additional tailoring of
tab stops, use /TSET.
/TABS=S restores all previously set tabs (including /TSET ones).
(This option is useful after /TABS=W.)
/TERM=type allows the user to specify the type of terminal he/she is
using. The qualifier may be specified as part of the SED command at DCL
command level or it may be included in the SED.INI file.
If SED cannot determine your terminal type, and /TERM is not present
on the command line or in the initialization file, the editor will
check for the logical name SED_TERMINAL which should be equated to your
terminal type using the abbreviations for various terminals listed
below. This logical can also be equated to your terminal type in the
If after checking for the above settings, SED still cannot determine
your terminal type, it will use the default system log-in setting which
can be seen by using the DCL command "SHOW TERMINAL."
The "type" on the /TERM qualifier can be VT100, VT52, or FT1
(Televideo 910), INF200 (Infoton 200), RAM6211 (Ramtek 6211 graphics
terminal), Visual 200 configured in VT52+ mode (VIS200).
Sets or clears a tab stop.
/TSET=n sets a tab stop at column n on the screen.
/NOTSET=n can be used to clear the tab (if any) at column n on the
Controls whether lower case typein is converted to upper case.
/UPPER causes all alphabetic characters to be converted to upper
case. This is useful on a terminal whose shift lock shifts all
characters, like the VT100.
/NOUPPER leaves characters in whatever case you type them. This is
/WIDTH=n (D=80, usually)
/WIDTH=n causes SED to think the terminal is n characters wide. Good
for terminals which can change their widths, like the VT100. (The VT100
has both 80 and 132 column display modes.)
The default is the current width of your screen (as shown by the DCL
command "SHOW TERM/WIDTH"), which is usually 80.
/NOWRITE (same as /READ)
Controls whether you can change the contents of the file you are
/WRITE allows the current file to be altered. This is the default.
/NOWRITE (which is the same as /READ) makes commands which change
the file become illegal, so the file cannot be modified accidentally.
/X=NAME=txt is used in SED.INI to set up an execute buffer named
NAME with contents txt.