\refbimodindex{__main__}
Under {\UNIX}, a complete program can be passed to the interpreter in
-three forms: with the \program{-c} \var{string} command line option, as a
+three forms: with the \programopt{-c} \var{string} command line option, as a
file passed as the first command line argument, or as standard input.
If the file or standard input is a tty device, the interpreter enters
interactive mode; otherwise, it executes the file as a complete