TkWWW explained

tkWWW
Developer:Joseph Wang
Released:0.1 [1]
Latest Release Version:0.13 pre2[2]
Discontinued:yes
Programming Language:Tcl/Tk
Platform:Same as Tcl/Tk
Language:English
Genre:Web browser and HTML editor[3]
License:GPLv2

tkWWW is an early, now discontinued web browser and WYSIWYG HTML editor[4] written by Joseph Wang at MIT as part of Project Athena and the Globewide Network Academy project.[5] [6] The browser was based on the Tcl language and the Tk (toolkit) extension[7] but did not achieve broad user-acceptance or market share,[8] although it was included in many Linux distributions by default. Joseph Wang wanted tkWWW to become a replacement for r r n[9] and to become a "swiss army knife" of networked computing.[10]

History

Joseph Wang announced in July 1992 that he was developing a web browser based on Tk, and made the alpha version 0.1 publicly available.[11]

Version 0.4 integrated a much easier installation procedure, a better default color scheme, keyboard traversals and a history mechanism.[12] Version 0.5, released 8 February 1993, introduced support for multiple fonts.[13]

Version 0.6 made personal annotations compatible with xmosaic and improved the GUI.[14] [15]

With the release of version 0.7 on 1 May 1993, tkWWW became the first WYSIWYG HTML editor for X11[16] which was originally written by Nathan Torkington.[17] [18] Another improvement was the ability to start in iconic mode.[19] [20]

Version 0.8 improved the graphical user interface (GUI) and added a "reload" option.[21]

In version 0.9, the browser achieved beta status and added support for character-styling tags and for version 7.0 of Tcl, as well as partial support for image tags.[22] [23]

Version 0.11 worked successfully with RCS.[24]  Based on the newly released Tk 4.0, tkWWW 0.13 was an alpha release, in order to allow for wider testing. It also added full support for inline images.[25]

Support for HTML+, a proposed successor to HTML 2, was implemented while the specification was being developed.[26]

tkWWW was extended by the GNU Guile project, to support Scheme extensions.[27]

Further development

The short-term agenda for tkWWW included an SGML parser[28] and the separation of the browser from the editor,[29] in order to simplify user experience.[30] The long-term plan included new functions like word processing, directory navigation, file transfer, and news and email reading.

Features

tkWWW was developed before the advent of Safe-Tcl, to allow untrusted applications to run from non-privileged accounts. Without such a safeguard, the potential for automatically executing remote scripts was a security issue.[38]

tkWWW was criticized for not supporting the mailto URI scheme, rlogin, WAIS, and HTML forms. A stop-button to interrupt the transfer of web pages was also not integrated.[39]

Extensions

Because tkWWW was based on the Tk framework, it was very easy to expand its functions and to extend its capabilities. Indeed, there were several extensions and applications based on tkWWW.[40]

Phoenix

Phoenix was a well-known web browser and editor, created at the University of Chicago in the Biological Sciences Division, that was built on tkWWW version 0.9.[41] [42] [43]   Development began in the summer of 1993, when there weren't any easy-to-use web-page editors available.[44] Development ceased in May 1995, there being a variety of similar tools available. The main new features were: improved HTML+ support, deeper integration of features such as copy and paste and native look-and-feel, and support for the Kerberos protocol by modified servers. The browser was supported on MS-DOS, Microsoft Windows, Mac OS, and on Linux and other Unix systems.[45] Further development would have added support for BSD platforms.

The short-term plan for tkWWW was to separate the editing and browsing functions, as had already been accomplished for Phoenix.[46] Inline-image support for GIFs and ISMAPs were also already integrated in the first version of Phoenix.

The ability to access Multi-user Object-Oriented (MOO) or Multi-User Dungeon (MUD) servers was requested as a new package for tkWWW, and this was delivered by the Phoenix team.[47] [48] [49]

The TkWWW Robot

Scott Spetka presented a paper at the Mosaic and the Web Conference in Chicago entitled "The TkWWW Robot" in October 1994.[50] [51] TkWWW robot was one of the first web crawlers and internet bots based on tkWWW. It was developed over the summer at the Air Force Rome Laboratory, with funding from the Air Force Office of Scientific Research,[52] to build HTML indexes, compile WWW statistics, collect image portfolios, etc.  TkWWW robot's major advantage was its flexibility in adapting to virtually any criteria to guide its search path and to control its selection of data for retrieval.[53]

The search algorithm worked by identifying "web neighborhoods" — finding logically related homepages. The bot returned a list of links in the form of bookmarks. It was limited, however, in that it could include only two links from the original homepages.

System requirements and technical

tkWWW was originally developed for Unix but would run on any modern operating system where Tcl/Tk is properly installed.[54] [55] To display images, tkWWW requires the xli package.

tkWWW has two strictly separated processes: one for the GUI, and another for network interaction and for parsing HTML.[56]   The latter is compiled C code based on the CERN libwww library. The front-end GUI is written in Tcl/Tk, which is interpreted at run time.

See also

External links

Notes and References

  1. Web site: Wang. Joseph. tkWWW-0.1. World Wide Web Consortium. 16 November 2010. 25 July 1992.
  2. Web site: Wang. Joseph. Overview. https://archive.today/20121212030837/http://www.mit.edu:8001/afs/athena.mit.edu/course/other/cdsdev/html/tk-www/help/overview.html. dead. 12 December 2012. Massachusetts Institute of Technology. 16 November 2010.
  3. Web site: Vetter. Ronald J.. Mosaic and the World-Wide Web. October 1994. North Dakota State University. 20 November 2010.
  4. Web site: Red Hat Linux Unleashed rhl50.htm. 19 November 2010. dead. https://web.archive.org/web/20160304040312/http://puschin.3x.ro/RHL50.HTM. 4 March 2016. dmy-all.
  5. Cockburn. Andy. Which Way Now? Analysing and Easing Inadequacies in WWW Navigation. 10.1.1.25.8504. Steve. Jones. International Journal of Human-Computer Studies . 6 December 2000. 45 . 105–129 . 10.1006/ijhc.1996.0044 .
  6. Web site: Wang. Joseph. Globewide Network Academy. Massachusetts Institute of Technology. 17 November 2010.
  7. Web site: Tim. Berners-Lee. Tim Berners-Lee. Robert. Cailliau. Robert Cailliau. World-Wide Web. World Wide Web Conference. World Wide Web Consortium. 16 November 2010. 23–27 September 1992. PostScript.
  8. Web site: John R.. LoVerso. Murray S.. Mazer. Caubweb: Detaching the Web with Tcl. Fifth Annual Tcl/Tk Workshop. USENIX. 28 November 2010. Boston, Massachusetts. July 1997.
  9. Web site: Wang. Joseph. tkWWW as a replacement for rrn. Massachusetts Institute of Technology. 16 November 2010.
  10. Web site: Wang. Joseph. tkWWW TODO list. Massachusetts Institute of Technology. 16 November 2010.
  11. Web site: Wang. Joseph. tkWWW-0.1. World Wide Web Consortium. 24 November 2010. 25 July 1992.
  12. Web site: Wang. Joseph. Announcing tkWWW release 0.4. World Wide Web Consortium. 16 November 2010. 18 October 1992.
  13. Web site: Wang. Joseph. Announcing tkWWW Version 0.5 Alpha. 1977.webhistory.org. 16 November 2010. 8 February 1993.
  14. Web site: Wang. Joseph. Announcing tkWWW Version 0.6 alpha. The World Wide Web History Project. 16 November 2010. 18 March 1993.
  15. Web site: Wang. Joseph. Version 0.6. Massachusetts Institute of Technology. 19 November 2010.
  16. Book: Liu. Cricket. Jerry. Peek. Russ. Jones. Managing Internet information services. December 1994. O'Reilly Media. 978-1-56592-062-0. 292. registration.
  17. Web site: Torkington. Nathan. HTML Editing. The World Wide Web History Project. 30 November 2010. 17 April 1993.
  18. Web site: Wang. Joseph. Re: HTML Editing. The World Wide Web History Project. 30 November 2010. 17 April 1993.
  19. Web site: Wang. Joseph. Announcing tkWWW 0.7, the first WYWSIWYG X11 HTML editor. The World Wide Web History Project. 16 November 2010. 1 May 1993.
  20. Web site: Wang. Joseph. Version 0.7. Massachusetts Institute of Technology. 19 November 2010.
  21. Web site: Wang. Joseph. Version 0.8. Massachusetts Institute of Technology. 19 November 2010.
  22. Web site: Wang. Joseph. Version 0.9. Massachusetts Institute of Technology. 19 November 2010.
  23. Web site: Wang. Joseph. [ftp://ftp.starhub.net.sg/pub/funet/languages/tcl/contrib/harbor/extensions/tkWWW-0.9.README tkWWW Version 0.9 beta (joe@athena.mit.edu)]. 22 November 2010.
  24. Web site: Wang. Joseph. ANNOUNCING tkWWW-0.11. University of Calgary. 22 November 2010. 26 April 1994. 6 July 2011. https://web.archive.org/web/20110706210426/http://web6.cpsc.ucalgary.ca/ksi/archives/WWW-TALK/www-talk-1994q2.messages/346.html. dead.
  25. Web site: Wang. Joseph. ANNOUNCE: Beta version of tkWWW-0.13 is available. World Wide Web Consortium. 16 November 2010. 2 April 1995.
  26. Web site: Connolly. Dan. Dan Connolly (computer scientist). HTML 2.0 Materials. World Wide Web Consortium. 16 November 2010. 28 September 1999.
  27. Web site: Lord. Thomas. An Anatomy of Guile The Interface to Tcl/Tk. Third Annual Tcl/Tk Workshop. Usenix. 23 November 2010. Toronto, Ontario, Canada. PostScript. July 1995.
  28. Web site: Wang. Joseph. tkWWW TODO list. Massachusetts Institute of Technology. 22 November 2010.
  29. Web site: Wang. Joseph. Working notes.......... Massachusetts Institute of Technology. 19 November 2010.
  30. Web site: Nick. Williams. Tim. Wilkinson. Experiences in Writing a WYSIWYG Editor for HTML. CERN. 22 November 2010. PostScript. 15 April 1994.
  31. Web site: Fischer. Christian. Konzeption eines Werkzeugs zur Erfassung von Betreiberanforderungen an ein integriertes Netz- und Systemmanagement. Diplomarbeit. Technische Universität München. 27 November 2010. de. 97. PostScript. 15 February 1995. 19 July 2011. https://web.archive.org/web/20110719100320/http://wwwhegering.informatik.tu-muenchen.de/pub/Diplomarbeiten/fisc95/Postscript-Version/fisc95.ps.gz. dead.
  32. Web site: Berners-Lee. Tim. May World-Wide Web News. World Wide Web Consortium. 16 November 2010. May 1992.
  33. Web site: Wang. Joseph. Demos of tkWWW multimedia capabilities. Massachusetts Institute of Technology. 19 November 2010.
  34. Web site: Wang. Joseph. History of tkWWW. Massachusetts Institute of Technology. 19 November 2010.
  35. Web site: Yee. Ka-Ping. Displaying Japanese on the WWW. 22 November 2010. 3 May 1996.
  36. Web site: TAKADA. Toshihiro. WWW Browsers that can display Japanese. Nippon Telegraph and Telephone. 28 November 2010. https://web.archive.org/web/19980208020014/http://www.ntt.co.jp/japan/note-on-JP/browsers.html. 8 February 1998. dead. dmy-all.
  37. Web site: Wang. Joseph. tkWWW as a replacement for FTP. Massachusetts Institute of Technology. 19 November 2010.
  38. Web site: Ball. Steve. SurfIt! - A WWW Browser. Fourth USENIX Tcl/Tk Workshop. USENIX. 28 November 2010. Monterey, California. PostScript. 10–13 July 1996.
  39. Ian S. Graham, The HTML Sourcebook: The Complete Guide to HTML, p. 327.
  40. Web site: Wang. Joseph. tk applications. Massachusetts Institute of Technology. 17 November 2010.
  41. Web site: The Phoenix Project: Distributed Hypermedia Authoring. World Wide Web Conference 1. CERN. 19 November 2010. Lavenant. Marc G.. Kruper. John A.. University of Chicago. PostScript. 25–27 May 1994.
  42. John A.. Kruper. Marc G.. Lavenant. Manisha H.. Maskay. Thomas M.. Jones. Building Internet Accessible Medical Education Software Using the World Wide Web. 2247761. University of Chicago. 1994. 7949942. Proc Annu Symp Comput Appl Med Care. 32–6.
  43. Web site: Virden. Larry W.. comp.lang.tcl Frequently Asked Questions (July 26, 2006) (4/6). SourceForge. 16 November 2010. 26 July 2006. dead. https://web.archive.org/web/20110404065153/http://tcl.sourceforge.net/faqs/tcl/part4.html. 4 April 2011. dmy-all.
  44. README of Phoenix-0.1.8 Alpha release (released 15 May 1995); available here http://ftp.lip6.fr/pub/www/tools/editing/unix/phoenix/phoenix-0.1.8.tar.gz
  45. Web site: Announcing Phoenix, A Genuinely-WYSIWYG HTML Editor . Lee A. . Newberg . The University of Chicago . https://web.archive.org/web/19981202063453/http://http.bsd.uchicago.edu/~l-newberg/phoenix-0.1.8.html . 2 December 1998 . 12 May 1995.
  46. Mintert. Stefan. Weberknechte. Heinz Heise. 22 November 2010. Ix 08/1995. 17 July 1995 . 1995 . 8 . de. 54.
  47. Web site: Berners-Lee. Tim. MOOs and WWW. World Wide Web Consortium. 16 November 2010.
  48. Lee A. . Newberg . Richard O. . Rouse III . John A. . Kruper . Integrating the World-Wide Web and Multi-User Domains to Support Advanced Network-Based Learning Environments . Proceedings of the World Conference on Educational Multimedia and Hypermedia . Association for the Advancement of Computing in Education . 1995 . Graz, Austria . 4 July 2009 . 23 September 2011 . dead . https://web.archive.org/web/20090704182007/http://www.rpi.edu/~newbel/publications/NewbergRouseKruper1994.pdf . dmy-all .
  49. Web site: Carter. Butts. Colman. Reilly. Marcus. Speh. Joseph. Wang. WWW and the Globewide Network Academy. Globewide Network Academy. 28 November 2010. Texas. PostScript. 1993.
  50. Web site: Spetka. Scott. The TkWWW Robot: Beyond Browsing. National Center for Supercomputing Applications. 20 November 2010. https://web.archive.org/web/20010724031925/http://www.cs.sunyit.edu/Robots/www94.html. 24 July 2001. 17 October 1994. dead. dmy-all.
  51. Web site: Submission Robots Index. Hostsun. 20 November 2010. 2002.
  52. Web site: Christopher C.. Yang. Jerome. Yen. Hsinchun. Chen. Intelligent internet searching agent based on hybrid simulated annealing. Elsevier. 28 November 2010. 2000.
  53. Khosravi. Fariborz. Tajalmolouk. Arjomand. The new Era in Intelligent Agent Design Using Genetic Algorithms Approach. Faslname-ye Ketab. National Library of the Islamic Republic of Iran. 53. 1022-6451. 27 November 2010. 4 June 2011. https://web.archive.org/web/20110604005032/http://www.nlai.ir/Portals/2/files/faslname/53/En-Content.pdf. dead.
  54. Web site: UNIX WWW BROWSERS. University of Toronto. 22 November 2010. 30 October 2010. https://web.archive.org/web/20101030225440/http://www.utoronto.ca/web/HTMLdocs/UNIXTOOLS/unix_browsers.html. dead.
  55. [README]
  56. Web site: Wang. Joseph. tkWWWInternals. Massachusetts Institute of Technology. 19 November 2010.

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