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    ELECTRONIC NEWSLETTER ON  REASONING ABOUT ACTIONS AND CHANGE        
Issue 99020             Editor: Erik Sandewall             30.7.1999
         Back issues available at http://www.etaij.org/rac/
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                    *********  TODAY  *********

The following contributions have arrived in latex markup, and are
made available in postscript:

1)  Joe Halpern has contributed to the discussion about modal logic
    that was initiated by John McCarthy's note "Modality, si!
    Modal logic, no!" and Heinrich Wansing's answer "Modality, 
    of course. Modal logic, si!"

    Joe Halpern's contribution can be accessed at
         http://www.ida.liu.se/ext/etai/rac/notes/1999/03/a4.ps
         http://www.ida.liu.se/ext/etai/rac/notes/1999/03/letter.ps
    for a4 and letter paper size, respectively.

2)  Camilla Schwind has answered to Fangzhen Lin's questions re her
    ETAI contributed article "Causality in Action Theories".
    Her answer can be accessed at
         http://www.ida.liu.se/ext/etai/received/actions/018/cs1.ps

3)  Michael Thielscher has contributed a summary for his article
    "Fluent Calculus Planning with Continuous Change" that he  submitted 
    to the ETAI on July 21. The summary is available from the article's
    review page, either by clicking from the general ETAI website, or
    directly at
         http://www.ida.liu.se/ext/etai/ra/rac/020/


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