<'
extend sys {
  run() is also {
    var a : int = 10;
    var b : int = 11;
    var c : int = 12;
    outf("a = %d b = %d\n",a,b);
    if a > b {
      out("a is greater then b");
    } else {
      out("a is less then b");
    };
    if (a > b) then { // then is optional
      out("a is greater then b");
    } else if (b > c) then {
      out("b is greater then c");
    } else if (c > a) then  {
      out("c is greater then a");
    };
  };
};
'>