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Trailing-Edge - PDP-10 Archives - LCG_Integration_Tools_Clearinghouse_T20_v7_30Apr86 - tools/sed-for-vms/sed.man
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SED

   Invokes  SED,  a full screen-oriented text editor. The format of the
SED command is [items enclosed in square brackets are optional]:

SED [filespec[=][/qualifier(s)]]

   SED  is  documented  in  the  SED tutorial (SYS$DOC:SED.MAN) and SED
reference (SYS$DOC:SED.DOC) manuals.


Overview

   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.


Restrictions

   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
coming!

   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.


Parameters

Filespec

   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
message.


Commands

   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,
                        or screen


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


MISCELLANEOUS COMMANDS
----------------------------------------------------------------
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
keys.

   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
summary.


Qualifiers

   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
within SED.

   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.

/Qualifier              Default
----------              -------
/AGAIN[=n]
/ALT[=n]
/[NO]APPND              /NOAPPND
/[NO]BACKUP             /BACKUP
/[NO]BEEP               /NOBEEP
/[NO]CASE               /NOCASE
/[NO]CREATE             /NOCREATE
/[NO]DTABS              /NODTABS
/GOTO=n                 /GOTO=0
/[NO]HELP               /HELP
/[NO]ICR                /NOICR
/[NO]ID                 /NOID
/[NO]IMODE              /NOIMODE
/[NO]INVRT              /INVRT
/[NO]ISAVE[=n]          /NOISAVE (/ISAVE=0)
/[NO]ITABS              /ITABS
/[NO]JOURN              /NOJOURN
/[NO]KEYPAD             /KEYPAD
/LENG=n                 /LENG=24
/LMAR=n                 /LMAR=1
/[NO]MESSAGE            /MESSAGE
/OUT=filespec
/[NO]PAGE               /NOPAGE
/[NO]PROG=filespec      /NOPROG
/[NO]QUICK              /NOQUICK
/[NO]RAISE              /RAISE
/[NO]RCUR               /NORCUR
/[NO]READ               /WRITE  (/NOREAD)
/[NO]RECOV              /NORECOV
/[NO]RESET              /RESET
/[NO]RMAR=n             /RMAR=80
/[NO]ROLL               /ROLL
/[NO]SAVE[=n]           /NOSAVE (/SAVE=0)
/[NO]SCROLL             /NOSCROLL
/[NO]SHOW               /NOSHOW
/[NO]SLIDE[=n]          /SLIDE=8
/[NO]TABS[=n]           /TABS=8
/[NO]TSET=n
/[NO]UPPER              /NOUPPER
/WIDTH=n                /WIDTH=80
/[NO]WRITE              /WRITE  (/NOREAD)
/X[=name]=txt
/TERM=type


/AGAIN
  /AGAIN
  /AGAIN=n

   /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
  /ALT
  /ALT=n

   /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.


/APPND
  /APPND
  /NOAPPND  (D)

   Controls  whether  <PICK>  appends to the PICK buffer, or overwrites
it.

   /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
default.


/BACKUP
  /BACKUP    (D)
  /NOBACKUP

   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.


/BEEP
  /BEEP
  /NOBEEP  (D)

   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.


/CASE
  /CASE
  /NOCASE  (D)

   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
default.


/CREATE
  /CREATE
  /NOCREATE  (D)

   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.


/DTABS
  /DTABS
  /NODTABS  (D)

   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
/GOTO=n

   /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).


/HELP
  /HELP    (D)
  /NOHELP

   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>.


/ICR
  /ICR
  /NOICR  (D)

   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.


/ID
  /ID
  /NOID  (D)

   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.


/IMODE
  /IMODE
  /NOIMODE  (D)

   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.


/INVRT
  /INVRT    (D)
  /NOINVRT

   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.
See /RAISE.


/ISAVE
  /ISAVE=n
  /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.


/ITABS
  /ITABS    (D)
  /NOITABS

   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.


/JOURN
  /JOURN
  /NOJOURN  (D)

   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.


/KEYPAD
  /KEYPAD    (D)
  /NOKEYPAD

   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
numeric keypad.

   /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
  /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
  /LMAR=n  (D=1)

   /LMAR=n - Sets the left margin to be column n. Default is 1.


/MESSAGE
  /MESSAGE    (D)
  /NOMESSAGE

   /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).

/OUT
  /OUT=filespec

   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
FILESPEC.

/PAGE
  /PAGE
  /NOPAGE  (D)

   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.

/PROG
  /PROG=filespec

   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
"HELP COMPIL".

   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.


/QUICK
  /QUICK
  /NOQUICK  (D)

   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
the default.


/RAISE
  /RAISE    (D)
  /NORAISE

   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

   /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

   /READ makes the file read-only. /READ is the opposite of /WRITE.


/RECOV
  /RECOV
  /NORECOV  (D)

   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.


/RESET
  /RESET    (D)
  /NORESET

   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
  /RMAR=n  (D=80, usually)

   /RMAR=n - Sets the right margin to be column n. Default is the width
of the screen (usually 80).


/ROLL
  /ROLL    (D)
  /NOROLL

   Controls what happens when you type <RETURN> on the last line of the
screen.

   /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.

/SAVE
  /SAVE=n
  /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.


/SCROLL
  /SCROLL
  /NOSCROLL  (D)

   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.


/SHOW
  /SHOW
  /NOSHOW  (D)

   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
the default.


/SLIDE
  /SLIDE=n  (D=8)
  /NOSLIDE

   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
  /TABS
  /TABS=n  (D=8)
  /TABS=W or /NOTABS
  /TABS=S

   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
  /TERM=type

   /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
LOGIN.COM file.

   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).


/TSET
  /TSET=n
  /NOTSET=n

   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
screen.


/UPPER
  /UPPER
  /NOUPPER  (D)

   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
the default.


/WIDTH
  /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.


/WRITE
  /WRITE  (D)
  /NOWRITE (same as /READ)

   Controls  whether  you  can  change the contents of the file you are
looking at.

   /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
  /X=NAME=txt

   /X=NAME=txt  is  used  in  SED.INI to set up an execute buffer named
NAME with contents txt.