anchor.diff:              return false;
           }
       };
  -    
  +
       function switchTo(el) {
           if(previousFrameInfo) previousFrameInfo.style.display = "none";
           previousFrameInfo = el;
  
positive.code:             self.setInput(response.prefilled_input);
          });
      };
      
      REPL.prototype.onEnterKey = function() {
          var text = this.getInput();
          if(text != "" && text !== undefined) {
  
negative.code:             });
          }
      }
  
      for(var i = 0; i < allFrames.length; i++) {
          (function(i, el) {
              var el = allFrames[i];
  