XPost: comp.lang.pl1   
   From: tom@kednos.company   
      
   > [As far as I can tell, the 1976 ANSI PL/I standard says nothing at   
   > all about the order of evaluation of array expressions.  But it's   
   > very hard to read and it's possible I missed something. -John]   
      
   That is correct, it is an implementation detail.   
      
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