OPEN filename$ FOR INPUT|OUTPUT|APPEND|BINARY|RANDOM|VIRTUAL AS [#] fileenumber [LEN [=] record-length] N = OPEN( A$, X, B$ ) N = OPEN( A$, X, B$, Y )
A$ is a string, LEN >= 1 X is a number, [MININT,MAXINT] B$ is a string, LEN >= 1 Y is a number, [MININT,MAXINT]
Opens a file for use. RANDOM requires LEN.
Open file number X. A$ is the mode: “I”, “O”, “A”, “R”. B$ is the file name. Y is the record length.