If the file specified by pathname doesn't exist, it is created when a file is opened for Append, Binary, Output, or Random modes. Open allocates a buffer for I/O to the file and determines the mode of access to use with the buffer. You must open a file before any I/O operation can be performed on it.
For sequential files, this value is the number of characters buffered. For files opened for random access, this value is the record length. Number less than or equal to 32,767 (bytes). Use the FreeFile function to obtain the next available file number. A valid file number in the range 1 to 511, inclusive. Keyword specifying the operations restricted on the open file by other processes: Shared, Lock Read, Lock Write, and Lock Read Write. Keyword specifying the operations permitted on the open file: Read, Write, or Read Write.
If unspecified, the file is opened for Random access. Keyword specifying the file mode: Append, Binary, Input, Output, or Random. String expression that specifies a file name may include directory or folder, and drive. The Open statement syntax has these parts: Part
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