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Frequently Asked Questions (FAQS);faqs.441



----------------------------------------
1   Biographical Information

This section contains the biographical notes from his novels, some
notes about how he came to write, and short biographical notes about
Neil Gaiman and Josh Kirby.

----------------------------------------
1.1  Personal History

Terry Pratchett is an author of humourous fantasy-based
science-fiction novels.  He has been favourably compared to Douglas
Adams, P.G Wodehouse and Tom Sharpe.  A lot of people rather like his
books.

(This is stolen from his liner notes:)

    Terry Pratchett is, on average, a sort of youngish
    middle-aged.  He lives in Somerset with his wife and
    daughter, and long ago chose journalism as a career
    because it was indoor work with no heavy lifting.

    Beyond that he positively refuses to be drawn.  People
    never read these biographies anyway, do they?  They
    want to get on with the book, not wade through masses
    of prose designed to suggest that the author is really a
    very interesting person so look, okay, he wrote these
    other books, all right.  Most were also about the
    Discworld, and actually quite a lot of people liked
    them.

    He grows carnivorous plants as a hobby; they are a lot
    less interesting than people believe.

        * * *

    For those people who really need to know, Terry Pratchett
    was born in Buckinghamshire in 1948.  He's managed to avoid
    all the really interesting jobs authors take in order to
    look good in this sort of biography.  In his search for a
    quiet life he got a job as a Press officer with the Central
    Electricity Generating Board just after Three Mile Island,
    which shows his unerring sense of timing.  He now writes
    full time.  It's true about the carnivorous plants, though.

(and this one is stolen from Guards! Guards!:)

    Terry Pratchett was born in 1948 and is still not dead. He
    started work as a journalist one day in 1965 and saw his first
    corpse three hours later, work experience _meaning_ something
    in those days.  After doing just about every job it's possible
    to do in provincial journalism, except of course covering
    Saturday afternoon football, he joined the Central Electricity
    Generating Board and became press officier for four nuclear
    power stations.  He'd write a book about his experiences if he
    thought anyone would believe it.

     All this came to an end in 1987 when it became obvious that the
    Discworld series was much more enjoyable than real work.  Since
    then the books have reached double figures and have a regular
    place in the bestseller lists.  He's also written three books
    for children (the _Truckers_ trilogy).  Occasionally he gets
    accused of literature.

    Terry Pratchett lives in Somerset with his wife Lyn and daughter
    Rhianna.  He says writing is the most fun anyone can have by
    themselves.

The Carpet People adds:
    [TP lives in Somerset] where he grows carnivorous plants and
    tries to make computers do things they were never intended to
    do.

Only You Can Save Mankind:
    [TP lives in Somerset], and says he writes for anyone old
    enough to understand.

Lords and Ladies:
    He also grows carnivorous plants and thinks the world could
    use more orang-utans.

----------------------------------------
1.2  How He came to write

He started writing short stories, several of which were published.
His first, "The Hades Business", which was published in Science
Fantasy #60 (vol 20, 1963) was the first story he ever wrote.  He got
10/10 for it (the first time he had gotten 10/10 for anything except
for a painting which his teacher had *thought* were two dinosaurs
fighting) and it was published in the school magazine.

There it would have ended, except for his school headmaster who
addressed an assembly shortly afterward and announced that he didn't
approve of the "moral tone" of the story.  Well, the magazine, which
would have struggled to break even, sold out within 15 minutes.  He
learned an important lesson, right then - by writing it is possible to
infuriate your enemies as well as please your friends.

He then had the story typed up by his Aunt and sold it to Science
Fantasy, and with the profits bought a typewriter.  This his first act
as an income-earner was to fire his Aunt.  His mother rewarded this
Thatcherite attitude and paid for his typing lessons and he was on his
way.

----------------------------------------
1.3  Neil Gaiman

Neil Gaiman is an sf author whose credits include:
 * the _Sandman Comics_ (monthly, 3 collections so far:
   - Preludes and Nocturnes [1 85286 326 9],
   - The Dolls House [0 930289 59 5] and
   - Dream Country [1 56389 016]),
 * _Black_Orchid_ (a one-off comic in 3 parts, also now collected in a
   single graphic novel [1 85286 336 6] published by Titan Books),
 * _Violent_Cases_ [1 85286 372 2] published by Titan Books,
 * _Signal_to_Noise_ [0 575 05284 8] published by VG Graphics.  This
   was originally serialised in _The_Face_ magazine.
 * _The Books of Magic_ (no apparent ISBN), separate books I to IV,
   illustrated by various artists, printed by DC Comics.
 * _Temps_ (a collection of superhero short stories which claims to be
   "Devised by Neil Gaiman and Alex Stewart" [0 14 014560 5]),
 * _Ghastly Beyond Belief_ (an anthology of truly awful SF)
   [0-09-936830-7],
 * and _Don't Panic: The Official Companion to The Hitch-Hiker's Guide
   To The Galaxy_ [1 85286 0138 8].

----------------------------------------
1.4  Josh Kirby

Josh Kirby is an artist who has been drawing covers for many years
now.  He has done the covers for (among others) Terry Pratchett, Craig
Shaw Gardner, Esther Friesner, Dan McGirt and the new editions of Tom
Holt's novels.

He also illustrated the Discworld (sort-of picture) book "Eric".  He
has a poster book out, with large versions of the first seven
Discworld covers [ISBN?  Title?  Publisher?]

----------------------------------------
2   Eccentricities of Books

Terry's books are available to varying degrees in the different
countries around the world.  Enclosed here is some information on
which books were released where, as well as some addresses for stores
that are reliable.

----------------------------------------
2.1  Eric

Eric wasn't released in the US, because Roc were uneasy about the big
edition and didn't buy it; people are talking to them now about the
mass market version.  (source, Terry Pratchett post on 8 Aug 1992).

----------------------------------------
2.2  UK Bookstores

Andromeda Books,
84 Suffolk Street,
Birmingham,
BA1 1TA,
UK

Forbidden Planet,
11 (I think, but what the hell, it'll find them) New Oxford Street,
London

----------------------------------------
2.3  US Bookstores

[?]
----------------------------------------
2.4  Translations

[?]

----------------------------------------
2.5  Covers and the absence of Kirby

Later US editions don't have Kirby covers.  Apparently the Kirby
covers make for confusion with Craig Shaw's Gardner's "humourous"
fantasy (which isn't at all in Terry's league).  This is only true of
Sourcery and later books.  The Colour of Magic through Mort had the
same Kirby covers as the UK editions.

----------------------------------------
3   Computers and TP

Terry is not only interested in computers, but is also on the net.

----------------------------------------
3.1  His E-Mail address

His e-mail address is [e-mail].  He warns that
"people who email me direct will get terse answers to the 'Hey, you're
not really TP, are you?' type questions, which still seem to be
turning up -- and I also tend to get a bit brief when its questions
that get regularly aired in the conference.  Apart from that, I'm a
real polite correspondent -- if I have time ...".

----------------------------------------
3.2  His Setup

He owns the fastest 486 he could buy, he writes with WordPerfect 4.2
and uses a laptop when travelling.  He doesn't like windows or mice.

He also used to own an Amstrad, and is a fan of the classic isometric
perspective games, _Batman_ and _Head Over Heels_.

----------------------------------------
3.3  "The Colour of Magic" Game

There was a game called "The Colour of Magic" released by Delta 4,
which contained passages straight from the book.  It was available for
8-bit machines, the Spectrum and C64.  It was produced by the company
behind _Bored of the Rings_, _Robin of Sherlock_ and _The Boggit_,
using the Quill adventure creator.  It even had a picture of Death
when you died, wearing a "Have a nice day" badge.

----------------------------------------
4   Merchandising

There are a lot of informal efforts at merchandising around, but no
really commercial ones.  This section explains why.

----------------------------------------
4.1  The Royal Position

         "'Everything works if people are sensible': It's all down to
          who's doin what, for whom, and what might loosely be called
          the spirit of the whole thing.  Fans doing things for other
          fans, such as Octarine does in the UK, (t-shirts and stuff
          for cost+) -- that's fine.  And I've let people do more
          than that to raise funds for a con.  I'd only get twitchy
          if it looked as though we were in real merchandising
          territory -- four-colour sweatshirts in Forbidden Planet,
          adverts in magazines ... and my concern there would be as
          much about fans getting value for money as anything else."

----------------------------------------
4.2  Discworld Models

Thanks to [e-mail] (G.D.Staines) for this:

Discworld characters - everyone from Death to Great A'Tuin himself (or
herself) - step (or crawl) out of the page in a new range of models by
  Clarecraft Designs,
  Woolpit,
  Bury St. Edmunds,
  Suffolk IP30 9SH.

Tel:[phone] for a list of stockists or further information.

----------------------------------------
4.3  Octarine

Terry has this to say:
  The officially unofficial Not-the-Terry-Pratchett-Fan-Club.  The guy
to write to is Chris Tregenza, 14 Runswick Drive, Wollaton,
Nottingham, NG8 1JN.  It's like this: a couple of years ago they
approached me, and I said I thought it would be an amazingly bad idea
(I mean, what do you do after issue three of the magazine: 'Um.  He's
done another book.  It's great/okay/ not as good as the last one IMHO.
Um.  Is he losing more hair, or what?'  So I suggested they broaden
the base to include humourous sf/fantasy generally.  And it seems to
have worked.  They resemble ZZ9 a lot and there's an overlap of
members; I'd say it's probably more an organisation that people who
like the DW books might enjoy belonging to rather than a fan club).  I
go along to their birthday meetings (to merry cries of "Who's he?",
"Throw him out!" and so on).  But there's no learned articles on the
DW, no signed photos of The Master, no 'official news' ... and that's
fine by me.

----------------------------------------
4.4  Discworld Maps

A map of A-M is being prepared for the Discworld Companion.  The guy
doing it had to pinpoint the Assassins' Guild, for example, from
references in six different books.  Worked, too.  (Don't ask when it's
coming out -- one day ...).  Did you know there are no fewer than
eight eating/drinking places mentioned in A-M?  TP didn't.

More information - the guy doing it is Steven Briggs (the chap who is
also adapting books for theatre) and it will probably, weighing one
thing with another, in the balance of circumstance, given full
reservation and understanding that the world is an uncertain place, be
out in late '93.

----------------------------------------
4.5  Truckers Video

There is a video of _Truckers_ available.  The details are:
  Thames Television International, Video Collection International
  VHS TV 8159, 110 minutes, VHS-PAL, price: approx. 8 pounds.

----------------------------------------
4.6  Computer Games

See section 3.3.  The company went out of business, so currently there
are no Discworld computer games.

Terry wants you to seek his OK before you write Discworld MUDs.  His
e-mail address is in section 3.1

----------------------------------------
4.7  The Mort Film

A production company was put together and there was US and
Scandinavian and European involvement, and I wrote a couple of script
drafts which wet down well and everything was looking fine and then
the US people said "Hey, we've been doing market research in Power
Cable, Nebraska, and other centes of culture, and the Death/skeleton
bit doesn't work for us, it's a bit of a downer, we have a prarm with
it, so lose the skeleton".  The rest of the consortium said, did you
read the script?  The Americans said: sure, we LOVE it, it's GREAT,
it's HIGH CONCEPT.  Just lose the Death angle, guys.

Whereupon, I'm happy to say, they were told to keep on with the
medication and come back in a hundred years.

Currently, since the amount of money available for making movies in
Europe is about sixpence, the consortium is looking for some more
intelligent Americans in the film business.  This may prove difficult.

It could have been worse.  I've heard what Good Omens was looking like
by the time Sovereign's option mercifully ran out -- set in America,
no Four Horsemen...oh god.
 (from Terry himself, 2 Nov 1992)

----------------------------------------
4.8  Plays

The Guards! Guards! play (early June next year):

Write to:
Stephen Briggs,
23 Elms Drive,
Old Marston,
Oxford OX3 ONN

... who is in the bemused state of taking tons of orders ALREADY.

In the wind also are another version of MORT and, aha, a musical based
on Wyrd Sisters.  There are also various tentative plans for DW
productions in Australia and California (GAG ME WITH A SPOON).  As
soon as things are firm, they'll get posted here and on CIX in the UK.
  (Terry himself, 29 Oct 1992)

MORT...the Play.

The three-thespian version of Mort was by the Flying Thing Theatre
Company of Liverpool and was on in that city earlier this year.  I've
just heard that they're well into planning a tour in SW England for
the first three months of '93.  They're worth seeing.  I laughed a lot
(even though they're partly mime artists).

As soon as I hear their finalised tour dates, I'll post them here and
on CIX.
  (Terry himself, 2 Nov 1992)

----------------------------------------
5   Related Files

Terry is a popular chappie.  Here are some other electronically
available documents which you might like to look at.
----------------------------------------
5.1  The Terry Pratchett Bibliography

Circulated by
    [e-mail]
this contains ISBN numbers, titles and blurbs for all TP's books.
It should be available (soon) via FTP as
    ftp.uu.net:/pub/usenet/alt.fan.pratchett/pratchett-biblio-faq
This is posted around the first and fifteenth of every month to
    alt.fan.pratchett
and    new.answers

----------------------------------------
5.2  The Annotated Pratchett

Circulated by
    [e-mail]
(Leo Breebaart), this explains the subtleties of Terry's works.  It is
currently at v4.0 and is posted to alt.fan.pratchett every month.  It
can be retrieved via anonymous FTP as
    theory.lcs.mit.edu:pub/dmjones/annotated-pratchett
or
    potemkin.cs.pdx.edu:/pub/pratchett/annotated-pratchett

----------------------------------------
6  Miscellany

Here's some stuff that didn't fit into any other category.

----------------------------------------
6.1  Similar Authors

P.G. Wodehouse, Douglas Adams, Jerome K. Jerome, Robert Rankin, Tom
Sharpe, Tom Holt, Calvin Trillin, P.J O'Rourke and Dave Barry are some
people whose styles are similar.

----------------------------------------
6.2  Rincewind's Name

Terry himself pronounces it to rhyme with "Mince pinned" and in Eric,
Rincewind meets his ancestor whose translated name means "Washer of
Winds".  Evidence would then tend to point to this pronounciation.

----------------------------------------
6.3  More Rincewind

Terry has said that he will write another Rincewind novel.  When,
well, that's a different question :-)
[more?]

----------------------------------------
6.4  The Future

The next DW book will probably be a sequel to Guards! Guards!,
containing a slightly expanded City Watch (a troll and a dwarf now on
the strength as a result of affirmative action hiring procedures)
Captain Vimes' wedding day, and Carrot learning a thing or two....
The working title is "Men at Arms."

Terry also wants to expand into YA (Young Adult) books as well.  He
has "Johnny and the Dead" coming out around April 1993.

----------------------------------------
6.5  Inconsistencies

Well, he *is* fallible.  Known inconsistencies are:
 * the number of eyes that Greebo has in _Witches_Abroad_
 * in _TCOM_, All's Fallowe is the one night of the year when witches
   stay home in bed.  In _Wyrd_Sisters_ however, this occurs on
   Hogswatch night.
 * there are inconsistencies about smells: in _TLF_, Rincewind asks
   what a smell is, and Twoflower thinks that it is bacon.  Later on,
   however, Twoflower is described as having "no sense of smell".
   Rincewind, in _Sourcery_, is an Ankh-Morporkian who (like all
   Ankh-Morporkians) has no sense of smell.
 * there are lots of geographical inconsistencies, which caused TP to
   preface _Sourcery_ with "This book does not contain a map.  Please
   feel free to draw your own".  One of the major inconsistencies
   which few people spot is that given the size of the Disc, and the
   distance the sun would therefore need to travel around it in 24
   hours, and that light travels at the speed of sound in the high
   magical field, then the sun is actually orbiting the Disc at twice
   the speed of its own light.
 * When Rincewind meets Death in Ankh-Morpork, in _The_
   Colour_Of_Magic_, people walk through Death.  Whereas later on,
   people are described as avoiding him.
 * In TCOM, Death kills a fly.  The Death from Mort and later books
   would never do such a thing - it changes reality.

----------------------------------------
6.6  Appearances

Book signings:

November, 1992
Wed 11: Evening event with Richmond Library.
Thu 12: 1-2pm Waterstones, 1063/4/7 Whitgift Centre,
    Croydon.
Fri 13: 1-2pm John Menzies, 56 Old Broad Street,
    London.
Sat 14: 12-1pm Forbidden Planet, 71 New Oxford Street,
    London.
Tue 17: Evening event at Cambridge Union Society.
Wed 18: 1-2pm Heffers Paperback Shop, 31 St Andrews St,
    Cambridge.
Thu 19: 12.30-1.30pm Bookland, 288 High Street,
    Bangor, Gwynedd.
    7-8pm Talk and signing at The English Dept
    University College of North Wales
    College Road, Bangor.
Fri 20: 12.30-1.30pm: Waterstones, 43-45 Bridge Street
    Row, Chester, Cheshire CH1 1NW.
Sat 21: 10.30-11.30am Andromeda, 84 Suffolk Street,
    Birmingham.
    2.30-3.30pm    W H Smith, 29 Union Street,
    Birmingham.
Mon 23: 1-2pm Waterstones, 104-108 Grey Street,
    Newcastle-upon-Tyne.
Tue 24: 12.30-1.30PM Waterstones, 132 Union Street,
    Glasgow.
Wed 25: 11am-12noon Waterstones, 236 Union Street,
    Aberdeen.
        4-5pm James Thin (spelling?)
    7-8 High Street
        Dundee.
Thu 26: 12.30-1.30pm Waterstones, 13-14 Princes Street,
    Edinburgh.

December 1992
Fri? 4: 12.30-1.30 Volume 1, the Queensmere Shopping Centre,
    Slough.

Cons:

Hillcon -- Rotterdam, November 27-29 1992.
Swancon - Perth, Australia Easter 1993 (and MAYBE another swift few
days on the East coast like this year)
Finncon - Helsinki, August 93
Orycon - Portland, Oregon, November 1993

----------------------------------------
6.7  The Hedgehog Song

It would appear that there was a Hedgehog song around the '20s, if not
before, with the same refrain as the Discworld song.  However, Terry
says "since I doubt it ever could have been in print, I can bravely
plead parallel evolution at most. There is a certain, how shall I put
it, natural cadence to the words."

----------------------------------------
Credits

Nathan Torkington ([e-mail]), Adrian N Ogden
([e-mail]), Vicky White, PR James
([e-mail]), Adrian Waterworth
([e-mail]), Chris Stratford
([e-mail]), Steven Ellis ([e-mail]),
Lesley Walker ([e-mail]) Leo Breebaart
([e-mail]), Darkstar ([e-mail])
Harry Broomhall ([e-mail]), Jonathan Lennox
([e-mail]), Martin V. Walser
([e-mail]), Melanie Dymond ([e-mail]), All
The Madmen ([e-mail]), Daniel Veditz
([e-mail]), Dhanesh ([e-mail]), D.J.T.
([e-mail]), Carl Edman
([e-mail]), Jerzy Michal Pawlak
([e-mail]), Michael Norrish ([e-mail]),
Terry Pratchett ([e-mail]), Malcolm Mladenovic
([e-mail]), Klaus Kluge ([e-mail]), D N Crow
([e-mail]), Andrew Conway ([e-mail]),
Jan van 't Ent ([e-mail]), Simon Read
([e-mail]), Ralf E. Stranzenbach ([e-mail]),
Mark Cook ([e-mail]), G. Wilde (no net access), Kai Siering
([e-mail]), Paul M Schwartz ([e-mail]),
Mike Kerstetter ([e-mail]), Martin Carstensen
([e-mail]), John Rickard ([e-mail]), Paul
Ashley ([e-mail]), Matthew Duhan
([e-mail]).
Xref: bloom-picayune.mit.edu comp.lang.prolog:6766 news.answers:4636
Newsgroups: comp.lang.prolog,news.answers
Path: bloom-picayune.mit.edu!enterpoop.mit.edu!news.media.mit.edu!micro-heart-of-gold.mit.edu!news.bbn.com!usc!sdd.hp.com!caen!destroyer!cs.ubc.ca!fornax!jamie
From: [e-mail] (Jamie Andrews)
Subject: comp.lang.prolog Frequently Asked Questions
Message-ID: <prolog/[e-mail]>
Followup-To: comp.lang.prolog
Summary: Information about free Prolog implementations; contact names for commercial systems; controversial topics.
Supersedes: <prolog/[e-mail]>
Reply-To: [e-mail] (Jamie Andrews)
Organization: Logic Programming Lab, Computer Science, Simon Fraser University
Date: Wed, 16 Dec 1992 10:00:10 GMT
Approved: [e-mail]
Expires: 01/03/93
Lines: 309

Posted-By: auto-faq script
Archive-name: prolog/faq

Original-by: [e-mail] (Jamie Andrews)
Version: 1.8
Last-modified: 10/15/92 by [e-mail] (Jamie Andrews)

     This article contains the answers to some Frequently Asked
Questions (FAQ) often seen in comp.lang.prolog.  It is posted
(twice a month) to help reduce volume in this newsgroup and to
provide hard-to-find information of general interest.

     This article includes answers to the following questions.

0. General information
1. What is the Association for Logic Programming?
2. Where can I get a public-domain, free Prolog for (the IBM PC,
   the Mac, Unix)?
3. What commercial systems are available?
4. How do I get in touch with my Prolog's users' group,
   sales representative, or technical support line?
5. I think language X is better than Prolog.  What do you think?
6. My Prolog prof assigned me this problem.  Can you help
   me with it?
7. Can you suggest some books on Prolog?
8. Are there any FTP archive sites for comp.lang.prolog?

     Please forward suggestions for further questions and
answers to the current FAQ maintainer, [e-mail] (Jamie
Andrews).

Changes in this version:
* Added information on archive sites (question 8).
* Added information on UPMAIL Tricia Prolog for the Mac.
* Updated information on the Prolog Resource Guide.
* Added contact address for the Prolog-2 Users' Group.
* Added information on ALF (Algebraic Logic Functional language).

            *    *    *

0. General information

     The newsgroup "comp.lang.prolog" discusses the language
Prolog and other "logic programming" languages.  Logic
programming languages, in general, are programming languages
which incorporate some of the language of mathematical logic;
unification and backtracking search are common operational
features.  For more background information about Prolog, see the
list of books in Question 7 of this list.

            *    *    *

1. What is the Association for Logic Programming?

     To keep up with the current state of logic programming
technology, readers can join the Association for Logic
Programming (ALP) and receive their Newsletter.  For details on
how to join, contact:

        Cheryl Anderson,
        ALP Administrative Secretary,
        Dept. of Computing,
        Imperial College,
        180 Queen's Gate,
        London, SW7 2BZ, UK

Email:   [e-mail]
Fax:    [phone]
Phone:  [phone] x5011

     The Prolog Resource Guide (v0.6) was printed in issue 5/1
of the Newsletter (Feb. 1992). This lists information concerning
Prolog Archives, Books, Suppliers, etc.  It is now maintained by
Mark Kantrowitz ([e-mail]), and
posted periodically to comp.lang.prolog.

     To send in Newsletter contributions, write to:

        Andrew Davison,
        Dept. of Computer Science,
        University of Melbourne,
        Parkville,
        Melbourne, Victoria 3052,
        AUSTRALIA

Email:   [e-mail]
Fax:    [phone]
Phone:  [phone] / 5230
Telex:   AA 35185

            *    *    *

2. Where can I get a public-domain, free Prolog for (the IBM PC,
   the Mac, Unix)?

     The following are anonymous-FTP sites for free Prologs
which are either in the public domain or are "copy-lefted"
(permitted to be copied with some restrictions on commercial use).

     (Please note that for extensive development work, users
will probably want a robust interpreter or compiler with good
debugging facilities and a standard syntax, among other things.
While public-domain systems are a valuable service to the
community, they do not necessarily have all these things, and
users should weigh carefully what they want to do against the
capabilities and costs of the available systems.)

For the IBM PC:
- BinProlog 1.39, anonymous FTP from clement.info.umoncton.ca
  (139.103.16.2), directory BinProlog.  Compiler for IBM PC 386.
  E-mail: [e-mail] (Paul Tarau).
- Anonymous FTP from aisun1.ai.uga.edu, directory ai.prolog;
  download "Contents" first.  Two systems.
  E-mail: [e-mail] (Michael Covington).
- SWI Prolog, anonymous FTP from swi.psy.uva.nl (192.42.96.1),
  directory pub/SWI-Prolog; or from ftp.th-darmstadt.de
  (130.83.55.75), directory pub/programming/languages/prolog.
  Portable, copy-lefted.

For the Apple Macintosh:
- Anonymous FTP from aisun1.ai.uga.edu, directory ai.prolog;
  download "Contents" first.
  E-mail: [e-mail] (Michael Covington).
- Open Prolog, anonymous FTP from grattan.cs.tcd.ie (or
  134.226.32.15), directory languages/open-prolog.  In
  binhex/stuffit form.
  E-mail: [e-mail] (Michael Brady).
- UPMAIL Tricia Prolog, anonymous FTP from ftp.csd.uu.se
  (130.238.12.1), directory pub/Tricia; get README first.
  Email: [e-mail].


For Unix systems:
- BinProlog 1.39, anonymous FTP from clement.info.umoncton.ca
  (139.103.16.2), directory BinProlog.  Compiler for SPARC and Sun/3.
  E-mail: [e-mail] (Paul Tarau).
- SWI Prolog, anonymous FTP from swi.psy.uva.nl (192.42.96.1),
  directory pub/SWI-Prolog; or from ftp.th-darmstadt.de
  (130.83.55.75), directory pub/programming/languages/prolog.
  Portable, copy-lefted.
- SB-Prolog, anonymous FTP from cs.arizona.edu, directory
  "sbprolog/v3".  Version 3.  Copy-lefted.
- Modular SB-Prolog (= SB-Prolog version 3.1 plus modules),
  anonymous FTP from ftp.dcs.ed.ac.uk (129.215.160.5), file
  pub/dts/mod-prolog.tar.Z .  Interpreter for SPARC.
  E-mail: [e-mail] (Brian Paxton).
- ALF (Algebraic Logic Functional language), WAM-based language
  with narrowing/rewriting, anonymous FTP from ftp.germany.eu.net,
  directory "pub/programming/languages/LogicFunctional".
  E-mail: [e-mail] (Rudolf Opalla).


            *    *    *

3. What commercial systems are available?

     Many commercial systems are listed in the periodically
posted Prolog Resource Guide.  The list of commercial systems
was compiled by Chris Moss, of Imperial College.  The rest of
the Resource Guide was originally compiled by Dag Wahlberg, of
Uppsala University.

     The Resource Guide is now maintained by the kind efforts
of Mark Kantrowitz, "[e-mail]", who
posts it periodically on comp.lang.prolog.