.pa 1 .he 'OPEN (II)'3/15/72'OPEN (II)' .ti 0 NAME open -- open for reading or writing .sp .ti 0 SYNOPSIS sys open; name; mode / open = 5. .br (descriptor in r0) .sp .ti 0 DESCRIPTION open____ opens the file name____ for reading (if mode____ is 0) or writing (if mode____ is non-zero). name____ is the address of a string of ASCII characters representing a path name, terminated by a null character. .sp The file descriptor should be saved for subsequent calls to read (or write) and close. .sp In both the read and write case the file pointer is set to the beginning of the file. .sp .ti 0 SEE ALSO creat(II), read(II), write(II), close(II) .sp .ti 0 DIAGNOSTICS The error bit (c-bit) is set if the file does not exist, if one of the necessary directories does not exist or is unreadable, if the file is not readable (resp. writable), or if 10 files are open. .sp .ti 0 BUGS --