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.ps 56 68 .autop
.C;UNDERSTANDING AND INSTALLING
.C;THE SED PROGRAM AND DOCUMENTATION

There are three SED RUNOFF files: SED.RNM, SED.RND, and SED.RNO.
They generate the tutorial manual, the reference manual, and the
installation guide, respectively. They have already been compiled
into the documents SED.MAN, SED.DOC and SED.MEM so you won't
necessarily need to generate them again. However, the first two
can be tailored to describe your own implementation of the SED
editor, so you may want to alter then and get your own personalized
copies of SED.MAN and SED.DOC.

Unfortunately, the RUNOFF features that allow this tailoring are not
standard, but were added to RUNOFF by the good folks at Rochester University.
The source, object, and documentation files for this RUNOFF are
included on this tape. Rochester's RUNOFF is a superset of DEC's RUNOFF
(with some bug fixes, even).

Also, the RUNOFF documentation (RUNOFF.MAN) is the most complete and
clear description of RUNOFF that is available. The new Rochester stuff
is clearly flagged, so if you ignore it you will have an excellent
description of DEC's own RUNOFF.

.s2
.C;WORKING UP THE SED DOCUMENTATION

SED.RNO is O.K. as it is. It generates SED.MEM, the installation guide,
whose contents is independent of operating system or terminal type.

SED.RNM and SED.RND generate SED.MAN, the tutorial, and SED.DOC, the
reference manual, respectively. The distributed versions of SED.MAN and
SED.DOC are for the VT52 terminal on a TOPS-10 system. If you are using
TOPS-20 or some other terminal you probably want to tailor them as described
here.

SED.RNM and SED.RND have a number of "MACROS" at their beginnings, which
define which terminal keys will invoke which commands. The Macros look like
this:

.s1 .lit
        .DEFINE TERMNL VT52
        .DEFINE ROLBKP _^Q
        .DEFINE ROLBKL _^W
        .DEFINE SRCBAK _^E
        .DEFINE CURDWN DOWN
        .DEFINE CURHOM HOME
.EL

The first MACRO says that the manual is being generated for a VT52 terminal.
The next three state that <ROLL-BACK-PAGES>, <ROLL-BACK-LINES>, and
<SEARCH-BACKWARD> are invoked by CONTROL-Q, CONTROL-W, and CONTROL-E,
respectively. The other two state that <CURSOR-DOWN> and <CURSOR-HOME>
are given by keys labeled DOWN and HOME.

In the body of the manual, wherever the terminal invocation should be, you
will find a reference to these Macros (like _{ROLFWP, for example). Thus
if you set up the Macros with the names of the keys that invoke the commands
on your terminal you will get documents which reflect how SED works on your
system.

.S2
.C;GENERATING NEW SED DOCUMENTATION

Use the new RUNOFF for SED.RND and SED.RNM. Either RUNOFF will do for SED.RNO.
The command sequence is

.s1 .lit
    ON TOPS-10:             ON TOPS-20:

        .R RUNOFF               @RUNOFF
        *SED.RND/CR             *SED.RND/CR/VAR:TOPS20
.EL

The "TOPS20" variable switch will cause the TOPS-20 flavored manual to be
made. If it's not included you'll get the TOPS-10 manual.

The /CR switch makes sure that every linefeed in the file is paired with a
carriage return, and is recommended. For one thing, files with a lot of
return-less linefeeds are hard to read with SED. There's nothing else out
of the ordinary here; RUNOFF will work the way you expect it to.

.S2
.C;INSTALLING SED

To install SED, first read the installation guide (SED.MEM) and build a
SED terminal file which will work for the terminals on your system. Then
LOAD and SSAVE SED (loading instructions are in all the SED??.MAC files).

These files should be put in these places:

.s1 .lit
        FILE            TOPS10  TOPS20

        SED.EXE         SYS:    <SUBSYS>
        SED.HLP         HLP:    HLP:
        SEDONL.HLP      HLP:    HLP:
        SED.MAN         DOC:    *
        SED.DOC         DOC:    *

* WHEREVER GOOD DOCUMENTATION IS STORED
.el .s1
The other files don't have to be anywhere in particular.

.S2
.c;SEDONL, THE ON-LINE HELP FILE

The on-line help file, SEDONL.HLP, is more of a data base than a text file.
It should not be edited. If changes need to be made, alter the file
SEDONL.TXT, and then run SEDONL.EXE to convert SEDONL.TXT to SEDONL.HLP.

Be careful to preserve the single CONTROL-L's between each entry in
SEDONL.TXT (and the one at the end of the file). Don't make an entry too
long: they are restricted to be less than 128 words (at 5 characters per
word). If SEDONL.EXE tells you "%BLOCK TOO LARGE" then an entry is too
long, and must be shortened.