1. Fonts for TeX, laTeX, the X windows system, postscript, and truetype (windows) are available. See http://www.math.uwaterloo.ca/apl_archives/apl/fonts[4/2009]

2. Truetype fonts for windows are available from ISI.

3. Dyalog's fonts for Windows are available from http://www.dyalog.com/resources.

4. Truetype fonts: Dyalog APL and Vector APL are available gratis, if you send a blank, formatted disk:
   
   Adrian Smith
   Brook House, Gilling East, YORK
   England -- U.K.
   
   (See his article in the April 1993 issue of VECTOR journal)

5. STSC, now Manugistics, used to distribute a rom chip with the APL characters for use in old monochrome adapters (now almost extinct). There's also code called SIMCGA.COM, that makes an old Hercules act like a cga (itself pretty old).

6. Fonts from several vendors are available for use (free of charge) in preparing articles for APL Quote Quad, APL conference proceedings, or other educational articles. This can be found on the ACM SIGAPL Web site. Word processing Templates to aid the author in preparing articles for conference proceedings or for submission to APL Quote Quad can also be found on the ACM SIGAPL web site.

7. Paul Houle has made a DOS window font file suitable for use with old STSC APL's available here [5/17/04]: http://paulhoule.com/stscfon/index.htm

8. Paul L Jackson's pljtools.zip contains DOSAPP.FON which if put in the Windows\Font directory, will provide an 8x16 APL font for a DOS window. This should work for various MS Windows products and APLSE. This is available at waterloo http://www.math.uwaterloo.ca/apl_archives/apl/apl-plus/index.html and (with APLSE) [5/05]:
   http://home.comcast.net/~paul.l.jackson/APL/

9. A variety of fonts and tools is available from Vector: http://www.vector.org.uk/resource

10. Emacs can display APL fonts, see http://www.emacswiki.org/emacs/AplInDebian

1. Anonymous ftp servers:
   • ftp://rtfm.mit.edu The official archive site for this faq and many others. The latest version of this faq is at ftp://rtfm.mit.edu/pub/usenet-by-group/comp.lang.apl/APL_language_FAQ

   • University of Waterloo, Canada. L.J. Dickey's collection. Lots of J/APL archives. http://www.math.uwaterloo.ca/apl_archives/Welcome.html[back up 3/2006]
     Some APL draft standards are kept here, for example the Committee Draft 1 of the APL ANSI/ISO standard http://www.math.uwaterloo.ca/apl_archives/apl/standards/cd1/

   • ftp://ftp.software.ibm.com, IBM support site. Look in ftp://ftp.software.ibm.com/ps/products/apl2. ftp://ftp.software.ibm.com/ps/products/apl2/demos contains a free (time limited) demo of APL2 for Windows, and TryAPL.

2. Web Sites:
   • ACM SIGAPL - information about the ACM, SIGAPL, related organizations, conferences, Internet resources, and the APL White Pages. http://www.acm.org/sigapl/

   • AFAPL - French APL users group. http://www.afapl.asso.fr

   • APL Quotations and Anecdotes. http://www.jsoftware.com/papers/APLQA.htm

   • APL White Pages A collection of names and email adressess of those interested in APL. Over 300 listings. To be listed, or see a listing go to http://www.acm.org/sigapl

   • A Programming Language (APL/J/K, The Movie), the movie blog http://www.aprogramminglanguage.com/

   • Bob Armstrong's CoSy page - APL/K notecomputing environment (10/2001) http://cosy.com/K/CoSy.htm, or http://cosy.com/language/

   • APL2000 Inc. Home Page http://www.APL2000.com

   • APL Team Ltd - German distributor of Dyalog APL http://www.aplteam.de and http://www.aplteam.com They have a general wiki on APL at http://aplwiki.com/

   • The Brighton University Resource Kit for Students, produced by John English (with various APL resources) http://burks.bton.ac.uk[broken? 9/19/2003]

   • Bernard Houben's site, Inverted Data Analyser, Dyalog APL [5/18/04] http://home.wanadoo.nl/houb/IDA.htm

   • Dyalog Ltd. Home Page [9/2012]: http://www.dyalog.com

   • Dyalog APLTools Group Page [9/2012]: http://tools.dyalog.com/

   • Eke van Batenburg's APL webpage: http://www.ekevanbatenburg.nl/PRVAPL.HTML

   • FinnAPL, Tauno Ylinen's FREEAPL for Windows, a couple of Dyalog workspaces, and APL idioms list http://www.pyr.fi/apl/index.htm
     http://www.pyr.fi/apl/about.htm
     

   • Free APL Compilers and Interpreters (page title, actually only interpreters are listed). Currently [3/2010] includes links to J, APLSE, A+, OpenAPL, FreeAPL, APLX, APL!. http://www.thefreecountry.com/compilers/apl.shtml
     

   • Conrad Hoesle-Kienzlen's web page [dead 6/2009], CHK IT-Consulting http://www.hoesle-kienzlen.de

   • Google groups: J discussions http://groups.google.com/group/J-Programming

   • IBM APL2 Home Page http://www.ibm.com/software/awdtools/apl

   • The IBM 1130 - including a simulator for this HW on a modern machine, and APL\1130. http://ibm1130.org/

   • J and APL Web Ring Web-ring moderated by Alex Kornilovski: http://webhome.idirect.com/~kornal/ring/index.html

   • J Home Page http://www.jsoftware.com

   • J. E. Howland's Home page; APL/J references http://www.cs.trinity.edu/~jhowland/

   • J.E.H. Shaw's Home page; J Guide http://www.warwick.ac.uk/statsdept/Staff/JEHS/index.html

   • K. Smillie's Home page; Various information for J, Beginning J, J and statistics http://www.cs.ualberta.ca/~smillie/

   • Lescasse Consulting - importer, distributor for APL2000 in France http://www.lescasse.com

   • Lingo Allegro Web Site: http://www.lingo.com

   • MicroAPL Limited http://www.microapl.co.uk

   • Milinta - Software and education for a variety of APL's. Help with workspace/file transfer between some APLs. (Dyalog, APL+family, SHARP MF, SAX) http://www.milinta.com

   • Mozilla Open Directory project http://dmoz.org/Computers/Programming/Languages/APL/

   • Openhere Network - Web search engine written in APL http://openhere.com/

   • Porting Mind.forth to APL http://mind.sourceforge.net/apl.html

   • Q'Nial - a similar array language http://www.nial.com/

   • Rex Swain's APL Information http://www.rexswain.com/aplinfo.html

   • Rubick's Cube in APL http://www.nyx.net/~anon84c2/

   • Remembering APL - a short introduction. Some good information on glyphs used by some dialects. http://www.quadibloc.com/comp/aplint.htm

   • Soliton's web page http://www.soliton.com (Main Page)

   • Toronto APL SIG - Activities of Toronto members. http://www.torontoapl.ca[8/2007]

   • TryAPL - Try APL online [9/2012] http://www.tryapl.org

   • Vector web site (maintained by Ray Cannon) http://www.vector.org.uk

   • VisualAPL from APL2000 Home Page: www.visualapl.com

   • Jim Weigang's Home Page - Newsreader etc. http://www.chilton.com/~jimw

3. Wiki -- websites that allows visitors to add, remove, and edit content
   • General APL Wiki from the German distributor of Dyalog APLhttp://aplwiki.com/
   • J Wiki http://www.jsoftware.com/jwiki
   • Wikipedia: http://en.wikipedia.org/wiki/APL_(programming_language).

4. Mail servers

   listserv@listserv.unb.ca (listserv@unb.ca), in the list APL-L, archives of comp.lang.apl ftpmail@decwrl.dec.com - mail access to waterloo, gatekeeper

5. Mail servers/lists

   BITFTP@PUCC.BITNET - access to waterloo?

   Access to the APL-L on bitnet from the internet can be done via mail:

           To: listserv@unb.ca
           Subject: SUBSCRIBE APL-L
           SUBSCRIBE APL-L

   DyalogAPL	t-chan@u-aizu.ac.jp for Dyalog users
   APL-ERS	APL-ERS@IRLEARN.BITNET UCD APL Interest Group "virtually extinct"
   APL-L	APL-L@UNB.CA, APL-L@UNBVM1.BITNET (broken?) APL Language Discussion (mirror of comp.lang.apl)
   APLEDU-L	APLEDU-L@UNBVM1.BITNET APL in Education
   A+	http://www.aplusdev.org/Lists/index.html A+ mail list, archive
   J Forum	http://www.jsoftware.com J mail list, archive

6. Inquiries about the ISO APL standards should be addressed to your national standards body, or to any delagete from your country. If you can not find out who that is, you may ask Lee Dickey at ljdickey@math.uwaterloo.ca (SC22 WG3 attendees)

7. SIGAPL Software Library

   New Name, New Addresses:

   SIGAPL has made major changes in its software distribution system. The SIGAPL Software Library replaces what was formerly known as the "Software Exchange." SIGAPL wants to make array processing software much more widely available and easy to get. We want it to be decoupled from annual APL conferences, available year-round, unbundled by interpreter, and electronically free. Thanks to Lee Dickey at the University of Waterloo, this software is now available at:

   • http://www.math.uwaterloo.ca/apl_archives/apl/Welcome.html

   APL96 Conference Software Highlights:

   MERLIN	Two new AWS mind bogglers (Langlet, FR)
   GRAN	AWS []G Graphics (Buzin, RU)
   NFILES	W3 Long file names, National Characters (Glantz, SE)
   APL2OS2T	APL2/2 Tutorial for OS/2 (Jizba, US)
   APLSE	Free APL*PLUS v10 Interpreter (Manugistics/APL2000)
   LRNAPLSE	APLSE Tutorial & Documentation (Holt, US)
   UNLOCK-D	Unlock locked fns in any small AWS (Holt, US)
   SL-Guide	How to add to the SIGAPL Software Library

   SIGAPL Software Guidelines:

   The SIGAPL Software Library (SL) is the premier venue for APL, J, and other array-oriented authors to display their programming ideas and skills, and for vendors to showcase their demos and products. APL and J software authors and vendors are invited to send their material on a 3.5 ″ DOS disk to:

   Lee Dickey, Mathematics Department
   University of Waterloo
   Waterloo Ontario
   Canada 2NL 3G1

   Tell him that it's for the Software Library. You may send your software at *any* time of the year. FTP upload is available on demand. Write to Lee Dickey at ljdickey@math.uwaterloo.ca

   SIGAPL's updated Software Library guidelines are:

   • Include an ASCII file (call it WSNAME.TXT) to describe what the software does, and what hardware and software is needed to use it. English is preferred, and other languages are welcome.

   • Think electronically. Your software needs to be packaged as a stand-alone product for electronic distribution. Good documen- tation adds real value to your software.

   • Put all of your material in one single .ZIP file for easy FTPing.

   • Include any needed copyright permissions. Copyrighted software can't be distributed without permission.

   • If possible, provide APL software in both its original form and as an APLACSCII file. APLASCII software (v1.4) is available for all major APLs at the electronic sources listed above.

   • Check your software for viruses. Archive.waterloo.ca will also check your software for viruses.

   • Authors should pay special attention to the quality, usefulness, and documentation of their work, and should include their name and address (including email).

   • Significant improvements and major updates of prior SL software are welcome.

• APL Book Sales [1/2002; seems to be out of service 2/2004?]
  operated by Robert G. Brown
  On-Line at
  http://www.apl-books.com, or
  APL Book Sales
  6749 South Westnedge Avenue
  Suite K-288
  Portage, Michigan
  USA 49002
  email: bob@acm.org
  FAX: (616) 324-9070

• APL Quote Quad
  Association for Computing Machinery
  (address below)

• BestWebBuys is a commercial site with a list of programming books and specifically APL books available [11/2006]:
  http://www.bestwebbuys.com/Programming_Languages-General-books.html bestwebbuys programming languages link http://www.bestwebbuys.com/Programming_Languages-General-N_10006038-books.html bestwebbuys APL link
  

• Dick Holt
  An email catalog of software for APL*PLUS, APL Special Edition Freeware, on-screen APL lessons and docs, plus many APL books is available upon request from Dick Holt, email:dick_holt@email.com

• EducAPL
  1120 Ave du Parc
  Quebec PQ
  CANADA G1S2W7

• Renaissance Data Systems [seems dead 11/2006]
  All books on APL and J in print
  P.O.Box 313, Newtown, CT 06470, USA
  email: aplbooks@earthlink.net
  http://www.aplbooks.com
  

• Past proceedings of the "APL as a Tool of Thought" conferences
  are available from NY/SIGAPL.

References - books mentioned on the net or that someone has recomended, not all of which are available:

For another list online see: http://www.math.uwaterloo.ca/apl_archives/apl/bibliography/index.htmlNot fully working yet [11/2006]

• APL"nn" Conference Proceedings - The annual ACM/SigAPL conference proceedings, published yearly from 19?? (APL??) to date (APL96) as an issue of APL Quote Quad; replace nn by the appropriate last two digits of the year.

• Ajay Askoolum, "System Building with APL + WIN," Wiley, ISBN: 0-470-03020-8, August 2006. Available at http://www.amazon.com/System-Building-APL-WIN-RSP/dp/0470030208 and other sources.

• Brown et. al. "APL2 at a Glance," Prentice Hall, ISBN 0-13-038670-7.

• T. Budd, "An APL Compiler," Springer-Verlag.

• Maurice Dalois, "Introduction to APL*PLUS PC," available from EducAPL, US$30, US$10 for overseas shipping.

• J. Ever and C. Fair, "Guidelines for APL Systems," DPD 22 IBM 037301, March 1976.

• Gilman and Rose, "APL - An Interactive Approach," Wiley, ISBN 220-471-30022-5.

• Ulf Grenander, "Mathematical Experiments on the Computer," Academic Press, 1982, ISBN 0-12-301750-5.

• Kent Haralson, Useful APL Defined Functions, IBM Technical Report, TR 00.2409, Feb. 8 1973.

• Timothy Holls, "APL Programming Guide," IBM G320-6103, 1978, and G320-6735, 1981, (out of print?).

• IBM, "APL2 Programming: Language Reference" (Version 2, SH21-1061; Version 1, SH20-9227 (DOS only)).

• IBM, "The APL Handbook of Techniques", IBM publication number S320-5996, April 1978. Includes routines for multi-precision integer and float operations.

• The IBM System Journal, V. 30, No. 4 (1991); Special Issue Devoted to APL.

• IBM online references: http://www-306.ibm.com/software/awdtools/apl/library.html

• A.D. Falkoff, K.E Iverson, E.H Sussenguth, "A formal description of System/360,"
  The IBM System Journal, V. 3, No. 3 (1964)

• K. E. Iverson, A Programming Language, Wiley, 1962.

• K. E. Iverson, Algebra : an algorithmic treatment, APL Press 1977, Copyright 1972 by Addison Wesley, Preliminary Edition entitled "Elementary Algebra" Copyright 1971 by IBM Corporation.

• K. E. Iverson, Elementary analysis, APL press 1976, Preliminary Edition "Elementary Functions" Copyright 1974 by IBM Corporation ISBN 0-917326-01-6

• K. E. Iverson, An introduction to APL for Scientists and Engineers, APL Press 1976, First published by IMB Corporation as Technical Report No 320-3019 March 1973 - ISBN 0-917326-04-0

• K. E. Iverson, APL in exposition, APL Press 1976, First published by IBM Corporation as Technical Report No 320-3010 March 1973 - ISBN 0-917326-02-4.

• K. E. Iverson, Introduction To APL, (1984-APL Press Palo Alto) ISBN 0-917326-14-8.

• K. E. Iverson, "A personal view of APL," IBM Systems Journal, Vol. 30, No. 4, 1991.

• K. E. Iverson, Concrete Mathematics Companion.

• S. Kamin, "Programming Languages: An Interpreter-Based Approach," contains (among other things) toy implementations of Lisp, APL, Scheme, SASL, CLU, Smalltalk, and Prolog, Addison-Wesley, 1990, ISBN 0-201-06824-9.

• Bernard Legrand, "Les APL Etendus," Masson, Paris, 1994. An introduction to modern APL (French).

• Bernard Legrand, "Mastering Dyalog APL - A Complete Introduction to Dyalog APL," ISBN-10: 0956463800 / ISBN-13: 978-0956463807 Available for download from http://www.dyalog.com/intro/, or can be purchased from Amazon (see link on http://www.dyalog.com/intro/).

• Jon McGrew, "An Introduction to APL2," IBM (SH20-9229).

• James A. Mason, "Learning APL: An Array Processing Language," Harper & Row Publishers Inc., New York, 1986, ISBN 0-06-044243-3 260 pp.

• Peelle, APL an Introduction, Holt, Rinehart & Winston, ISBN 0-03-004953-9.

• Reiter & Jones, APL with a Mathematical Accent, Brooks/Cole ISBN 0-534-12864-5, (now being distributed by Chapman & Hall).

• C. Reiter, Fractuals Visualization and J, Iverson Software, Inc, 1995 ISBN 1-895721-11-3.

• Adrian Smith, "APL, A Design Handbook for Commercial Systems," Wiley series in information processing, Wiley & Sons, 1982, ISBN 0-471-10092-7.

• D. Stiers, M.J. Goovaerts, J. De Kerf, "APL - The Language and its Actuarial Applications"

• Norman D. Thomson, Raymond P. Polivka, "APL2 in Depth," Springer-Verlag, 1995, ISBN 0-387-94213-0 ($39.95).

• Jerry R. Turner, "APL IS EASY!," Manugistics, 1993.

• "SHARP APL Reference Manual," 2nd ed., Soliton Associates Limited PC Version: Iverson Software, 1993, ISBN 1-895721-07-5.

• Jim Weigang, "APL Notes," An introduction to APL that includes 16- and 32-bit APL*PLUS
  interpreters. For orders and more information, see:
  http://www.chilton.com/~jimw/aplnotes.html

• "A Source Book in APL," APL Press, 1981, ISBN 0-917326-10-5.

• "J Phrases," Iverson Software, 1996, ISBN 1-895721-12-1

• "Exploring Math", Iverson Software, 1996, ISBN 1-895721-13-X

• "J Primer," Iverson Software, 1996, ISBN 1-895721-14-8

Note that information on officers may be somewhat out of date.

                             CALL FOR PAPERS [8/30/2005]
                              APL QUOTE QUAD

The next issue of APL Quote Quad is being designed. Prospective authors
are encouraged to submit papers on any of the usual subjects of
interest related to Array-Processing Languages (APL, APL2, J, and so
forth). Submitted papers, in Microsoft Word (.doc), Rich Text Format
(.rtf), Openoffice format (.scw), Latex (.tex) or Acrobat (.pdf)
should be addressed to 
                             Manuel Alfonseca
                         Manuel.Alfonseca@uam.es
with copy to:
                             Antonio Annibali
                       Antonio.Annibali@uniroma1.it
                             and Mario Sacco
                         mario.sacco@acm.org

Care must be taken to make the submitted papers self-contained,
eg. if they require special APL typesettings. The tentative time limit
for the new material is September 30th, 2005.

Different APL vendors store workspaces in completely different formats. This has greatly reduced sharing of functions among users, and made it difficult for users to migrate between vendors and even between machines. Here there are some options -

1. Use the Workspace Interchange Standard (WSIS), documented in the ISO standard. This has been partially implemented by various vendors. For example Manugistics (STSC) uses an SLT workspace to do the reading/writing.

2. Use the IBM )in and )out .atf files (documentation?) Here are some concrete instructions, courtesy of Eke van Batenburg,

   You only port APL, no GUI, no file I/O, no graphics, no locked objects. The following recipees use (arbitrary choosen) filename TRANSW.ATF on floppy as intermediate. "<>" means "next line".

   1. Macintosh APL68000 export to floppy:
      []MOUNT'Untitled' <> )OUT 0 TRANSWS
      In finder, change file name to "TRANSWS.ATF"

   2. Macintosh APL68000 import from floppy:
      In finder, change file name to "TRANSWS" (without ".ATF" extension!!!)
      []MOUNT'Untitled' <> )IN 0 TRANSWS Problems:
      "INVALID FILE" can mean "SYMBOL TABLE FULL" (check ")SYMBOLS" and increase them to 1000) or comment lines in file (remove all lines beginning with "*" using any editor and try again).

   3. Atari APL68000 export to floppy:
      []MOUNT 'A:' <> )OUT 0 TRANSWS

   4. Atari APL68000 import from floppy
      []MOUNT 'A:' <> )IN 0 TRANSWS
      Problems: same as in point 2.

   5. IBM APL2/PC export to floppy:
      )HOST A: <> )OUT TRANSWS

   6. IBM APL2/PC import from floppy:
      )HOST A: <> )IN TRANSWS
      Problems: none experienced upto now

   7. IBM mainframe export to floppy:
      start APL with "APL2 CASE(2)" (necessary for underscored conversion)
      )CLEAR <> )COPY workspacetobeported (NOT LOAD!!!!)
      )OUT TRANSWS <> )CLEAR <> )IN TRANSWS <> )OUT TRANSWS
      (yes, 2x seems to work, 1x sometimes gives gibberish, I don't know why)
      Download ....APLTF.TRANSWS to floppy, rename to TRANSWS.ATF
      Problems: if you download with Kermit: set TEXTMODE OFF and set file TYPE BINARY

   8. IBM mainframe import from floppy
      I have no experience with this, but I suppose:
      Upload TRANSWS.ATF to file ...APLTF.TRANSWS
      )IN TRANSWS
      

   9. APL2000 APL+DOS, APL+UNIX, APL+Win export to floppy:
      ]OUT A:TRANSWS.ATF

   10. APL2000 APL+DOS, APL+UNIX, APL+Win import from floppy:
       ]IN A:TRANSWS.ATF
       Problems: Different from IBM or APL68000 or "extended standard" are: "A B C[2]" is B, partioned enclose, squeezed quad, monadic ",[1.5]", take with axis and scalar functions with axis.

   11. Dyalog APL:
       Dyalog includes User Commands for workspace transfer; these are documented in the Workspace Transfer Guide, supplied with Dyalog APL.

   12. APLX reportedly provides )IN and )OUT commands compatible with APL2/PC and APL2/370.
       

   13. NARS2000 also supports migration through .atf files written out by )OUT and read in by )IN.
       

3. Write the functions/data out to ASCII files using some sort of transliteration scheme (see 11). This has the advantage over (1) that the files are human-readable and editable.
4. VisualAPL from APL2000 provides two simple options for importing APL code from legacy APL's:
   1. Select the APL code in the source APL's session and Paste Special it into VisualAPL in Microsoft Visual Studio 2005/2008.
   2. An ActiveX component is provided with VisualAPL to en masse convert the legacy APL code to Unicode and store it in a text file which can be used by VisualAPL.
   VisualAPL does not use a proprietary workspace format for storing APL code, instead it stores APL code in Unicode text files which can be run as interpreted APL scripts or as compiled APL .Net classes using Microsoft Visual Studio 2005/2008. VisualAPL Unicode text files can also be directly compiled without Visual Studio using the command line compiler provided with the Microsoft .Net framework.

   VisualAPL does not use a proprietary APL 'session', but instead uses the mainstream Microsoft Visual Studio 2005/2008 IDE [Interactive Development Environment].

All schemes suffer from the basic incompatibility between APL vendors. This comes from extensions to standard ISO APL in several areas:

1. Different built in functions - the quad functions. This includes file IO, graphics etc. Also the (mostly obsolete) ibeam functions.
2. Generalized arrays - boxes versus nests. A major fight in the community for at least the last 10 years. Unresolved.
3. User defined operators - not all implementations allow this.
4. Multivalent functions - not all implementations allow this.

Each instance of the above requires someone who knows both implementations to rewrite the code. Hence only ISO APL is easily portable.

Almost all vendors have provided ways to enter APL from non-APL terminals. They took forms such as @BOX for example. For some reason however, they all used different symbol sets and different transliterations. Hence all are incompatible. Various users, seeing the advantage of this approach versus the WSIS have tried their hands.

I there are several separate issues: writing an APL character, writing APL data, writing APL functions, and writing out a whole workspace.

Approaches for APL characters :

1. Jim Weigang has proposed a verbose version that is probably the current standard.
   http://www.chilton.com/~jimw/a2apapr1.html Example:

   s {<-} +/ {rho} , a

   Transliteration programs for many APL's are available at
   http://www.chilton.com/~jimw/a2ardme.html [this link works, but the program links point to inaccessible parts of waterloo... this currently gets to real programs: http://www.math.uwaterloo.ca/apl_archives/apl/software-library/apl95/]

2. My own approach is a bit more terse - see aplc, symbols3v1.txt on my home page
   Example:

   s  .is + / .ro , a

3. William Chang (wchang@phage.cshl.org) has proposed a J-ish verion called APL!
   Example:

   s  <- +/ ? , a

Approaches for objects:

1. John Mitloehner (mitloehn@uxq.wu-wien.ac.at) has proposed a PP scheme for this that includes data and functions. See his article at APL92. Code for various APLs is available at waterloo. Example:

      @begin function NUB
         R@is NUB X
         R@is ((X@iota X)= @iota @rho X)/X
      @end function
   

   Code is also available for incorporation of APL into latex documents. See J. Mitlohner (1992), Porting APL Programs via ASCII Transliteration. APL Quote Quad, 23(1):148-155.

2. Jim Weigang proposes the more familiar "Del editor" output format. Sample code for this translator is available in this format.

Unicode (http://www.unicode.org/) was conceived as a way of storing data in any of the worlds languages. This includes APL. Most modern computer OS seem to support this. Most modern APLs natively support unicode now. Of course fonts are needed, and programs that can display/interact with the data. Most (all?) fonts are incomplete, as there are a lot of glyphs need to represent everything, so of course many don't include all APL characters (or Devanagari, Tibetan,...).

• Phil Chastney has written an article and included a Unicode font with APL characters http://www.vector.org.uk/resource/simp2.htm
• Markus Triska has some notes on APL/Unicode at
  http://stud4.tuwien.ac.at/~e0225855/unicapl/unicapl.html
  Included there is an apl.el file for Emacs, that allows entering unicode charaters using apl-ascii.
• Adrian Smith's unicode font apl385 along with other information and fonts is available at http://www.vector.org.uk/resource/index.htm.