1: (module mod1
2:    (import mod2)
3:    (export (mod1 x))
4:    (main start))
5: 
6: (define (start argv)
7:   (print "command-line: " argv)
8:   (print (foo (bar (car argv)))))

1: (module mod2
2:    (import mod1)
3:    (export (mod2 x)))
4: 
5: (define (mod2 x)
6:   (cons 'mod2 x))