Section Header
          - name := HELLO_WORLD;

        Section Public
          - main <- 
          (
            "Hello world\n".print;
          );

        Section Header
          - name := FACTORIAL;

        Section Private
          - factorial x:INTEGER :INTEGER <- 
          ( + result:INTEGER;
            (x <= 1).if {
              result := 1;
            } else {
              result := x * factorial (x - 1);
            };
            result
          );

        Section Public
          - main <- 
          (
            "5! = ".print;
            factorial 5 .print;
          );