DECC$EXEC_FILEATTR_INHERITANCE

   The DECC$EXEC_FILEATTR_INHERITANCE feature logical affects child
   processes that are C programs.

   For versions of OpenVMS before Version 7.3-2, DECC$EXEC_FILEATTR_
   INHERITANCE is either enabled or disabled:

   o  With DECC$EXEC_FILEATTR_INHERITANCE enabled, the current file
      pointer and the file open mode is passed to the child process
      in exec calls.

   o  With this logical name disabled, the child process does not
      inherit append mode or the file position.

   For OpenVMS Version 7.3-2 and higher, DECC$EXEC_FILEATTR_
   INHERITANCE can be defined to 1 or 2, or be disabled:

   o  With DECC$EXEC_FILEATTR_INHERITANCE defined to 1, a child
      process inherits file positioning for all file access modes
      except append.

   o  With DECC$EXEC_FILEATTR_INHERITANCE defined to 2, a child
      process inherits file positioning for all file access modes
      including append.

   o  With DECC$EXEC_FILEATTR_INHERITANCE disabled, a child process
      does not inherit the file position for any access modes.