The RECL specifier asks the maximum record length for a file. It takes the following form:
RECL = rcl
Is a scalar integer variable that is assigned a value as follows:
If the file or unit is connected, the value assigned is the maximum record length allowed.
If the file does not exist, or is not connected, the value assigned is zero.
The assigned value is expressed in 4-byte units if the file is currently (or was previously) connected for unformatted data transfer; otherwise, the value is expressed in bytes.