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The FMLI interpreter does not use EOF to exit a program. The assumption is that applications are interactive and at some point allow the user to select an item that evaluates to the exit command. Otherwise, the FMLI application will run indefinitely. Thus, if the input to FMLI is to come from a file, the file must include the exit command.
If you are running FMLI on a system with the shell job control feature, you can interrupt an FMLI application using the <CTRL-z> key and resume it with the fg utility.