it was asked on BLIND-DEV:

quote
  How about authoring scripts for JAWS for specific applications,
  or the improvement of existing scripts.
unquote

there is a list specifically dedicated to the discussion of script writing for
JFW -- for hypertextualized subscription information please consult:
        http://www.hicom.net/~oediups/blist.html#scripts

a text-image of which follows:

  JFWScripts

In the words of Dennis Brown, the listowner of the JFWScripts emailing list:

     The JFWScripts list has been established in the hopes that the
     "Script Gurus", official or otherwise, will be willing to help us
     mere mortals in writing, editing, and developing new scripts for
     the JAWS for Windows screen reader. The JFW Script language is
     a powerful, flexible, and largely unsupported resource which endows
     the user with the ability to do damn near anything they like, given
     a little ingenuity and encouragement.

     Anyone and everyone who uses JFW is encouraged to join the
     JFWScripts list--especially people from Henter-Joyce's script
     team, unofficial script gurus, and anyone else interested in
     getting the most out of this script language!

     If you've got a question about the script language in general, or a
     certain script in particular; if you've tried creating a script,
     and it isn't doing what you thought it would do; if you can't get a
     script to compile; or if you'd just like to bounce an idea or two
     off other script writers, then the JFWScripts list is the place to
     do it!

To subscribe to JFWScripts, send a BLANK emessage to:

     <[log in to unmask]>

To post to JFWScripts, once you have subscribed, send your emessage to:

     <[log in to unmask]>

To unsubscribe from JFWScripts, send a BLANK emessage to:

     <[log in to unmask]>

To contact Dennis Brown, the listowner of JFWScripts, email:

     <[log in to unmask]>
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He that lives on Hope, dies farting
     -- Benjamin Franklin, Poor Richard's Almanack, 1763
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Gregory J. Rosmaita <[log in to unmask]>
   WebMaster and Minister of Propaganda, VICUG NYC
        <http://www.hicom.net/~oedipus/vicug/index.html>
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