HelpPC 2.10	Quick Reference Utility	Copyright 1991 David Jurgens
TC: int _open( const char *path, int access )        - prototype in io.h, also include fcntl.h        - this function will not create a file, use _creat() if it doesn't          currently exist        - access is a combination of the following:                DOS 2.0+ Attributes                O_RDONLY        open read only                O_WRONLY        open write only                O_RDWR  open read/write                DOS 3.1+ Attributes                O_NOINHERIT     file is not to be passed to child processes                O_DENYALL       file is not accessible to others (exclusive)                O_DENYWRITE     file is read only to all other opens                O_DENYREAD      file is write only to all other opens                O_DENYNONE      file is to be shared by all        - MS C uses _dos_open()        - see   INT 21,3D   open()   _creat()
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