print(postForm("http://www.speakeasy.org/~cgires/perl_form.cgi",
            "some_text" = "Duncan",
            "choice" = "Ho",
            "radbut" = "eep",
            "box" = "box1, box2"

          # "box" = "box1"               
          # and try c("box1", "box2")
          ))