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Trailing-Edge - PDP-10 Archives - bb-kl11c-bm_tops20_v6_1_atpch1_16 - autopatch/pas2v1.b08
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                 BEWARE INFORMATION FOR PASCAL-20-V1                            
  
  
                     BEWARE INFORMATION FOR EDIT 4      IN PASCAL               
  
PASCAL-20 now  observes  the  following rules  regarding  shared  file
access.  These modifications maintain PASCAL-20's subset compatibility
with VAX PASCAL
1) Any file may be  shared for reading, whether it  is a text file  or
   not
2) No file may be shared for writing
3) A file which is to be shared for reading must be opened with an
   attribute of READONLY
4) Text files opened with the OLD attribute may no longer be shared
5) The I/O error handling code no longer assumes that a RESET error
   automatically means the file was not found, but issues the real
   diagnostic instead
Please note that the  behavior of some  existing programs may  change.
Programs which open text files with the OLD attribute with the  intent
to allow  multiple  file readers  must  be modified  to  use  READONLY
instead.
********************************************************************************
  
  
  
END OF  PASCAL-20-V1